14 best phono preamp tubes

• ❤Tube MM Phono Preamplifier: Converts phono signals to Line Level Signals with low-noise integrated circuits and high-quality components to remove low-frequency noise ensure clear sound quality. Designed with grounding post to protect your turntable.
• ❤Three switchable gain modes: 39, 42, 45 dB. Adjustable gain levels to give you customizable control and outstanding compatibility. Entry-Level high-end analog sound and top-notch circuitry for an unbeatable low cost.
• ❤Tube Preamplifier: It's also a tube preamp with 3.5mm AUX Input. Designed and assembled by Fosi Audio from high-quality components. Great warm, smooth-sounding.
• ❤Applicable vacuum tube model: 6K4/6J1/6J4/GE5654/6AK5/66*In vacuum tubes, etc. You can replace the vacuum tubes to DIY your stereo system. Different tube with different sound.
• ❤What You Get: Box X2 phono preamp x1, Vacuum tubes x2, RCA cable x1, power adaptor x1, user manual x1, 18-Month global warranty, and 24-Hour quick customer service.

Product features

Tube MM Phono Preamplifier/Tube Preamp

• Power Adapter Output: 12V/1.5A
• Product Adapter Input Voltage Range: AC 110V - 240V
• Box X2 Phono Preamp DC Input Voltage: 12V
• Output Voltage Level: 600 Mv @3mV 1kHz
• SNR ≥ 98dB
• THD ≤ 0.1%
• Frequency Response: Standard RIAA
• Product Weight: 0.66 lb/300g
• Product Dimensions: 4.66 inch/3.85 inch/1.29 inch

Tube Preamplifier

Audiophile-grade amplification modules offers outstanding performance with its Low-Noise Audio Operational Preamplifiers. It's also a tube preamp with 3.5mm AUX Input. Designed and assembled by Fosi Audio from high-quality components.

Gain Adjustment

Three switchable gain modes: 39, 42, 45 dB. Adjustable gain levels to give you customizable control and outstanding compatibility. Entry-Level high-end analog sound and top-notch circuitry for an unbeatable low cost.

MM Turntable Preamp

Suitable for moving-magnet (MM) cartridges. Precise RIAA equalization. Consistent sonic performance, super low-noise. This mini preamp has stereo RCA inputs and stereo RCA outputs Connect the turntable to the RCA inputs and ground.

12V/1.5A Power Adapter

Energy-efficient and stable power supply which got authoritative certification by many security tests.

Replaceable Vacuum Tubes

Applicable vacuum tube model: 6K4/6J1/6J4/GE5654/6AK5/66*In vacuum tubes, etc.

FREE RCA Cable

Fosi Audio Box X2 preamp comes with a FREE RCA cable. Unbeatable low cost for an home audio phonograph preamp.

Product description

Technical Parameters:

Input sensitivity: 400mv

Voltage output: 2V (RMS THD <0.03%)

S / N Ratio: 94DB

Frequency Response: 12Hz-50KHz (-0.5DB)

Input Impedance: 200Kohm

Output Impedance: 600ohm

AC Input: 100V (115V)

Power Consumption: 30W

Dimension (W-D-H): 320 * 170 * 120 mm / 12.6 * 6.69 * 4.72 in (Add tube height)

Net Weight: 3.5 kg / 7.72 lb, with a packaging weight 4 kg / 8.82 lb



Package Includes:

1× tube preamp

1× Power cord

• Improved circuit; Vacuum Tube: Shuguang 12AX7 * 2 / 12AU7 * 2 / 6Z4 * 2
• Excellent scaffolding design, reasonable, regular, symmetrical device layout, strictly respect the grounding line
• Power Transformers 76 * 40 H250 0.35 sheets; Japan ALPS 16 A-type audio potentiometer
• Full aluminum chassis with wood side panel; 4 Set of stereo L/R RCA auido input, 1 set of RCA output

User questions & answers

Question:	How easy is it to replace the tube sockets in this unit? Some were screwed up on receipt and I may have damaged others replacing tubes
Answer:	Solid state, uses discrete components. Very neutral sounding and has a very open soundstage.
Question:	How many dB of gain can it add to the input signal
Answer:	I've no idea. I gave it away. It wasn't what I needed. It did work fine, but it didn't have a actual On/Off switch which was a bother.
Question:	ax7 tubes are noted for a treble shrillness. is this noticeable on this unit? can the 12ax7 tubes be rolled to lower-gain 12at7 tubes
Answer:	Yes, the RCA out on your tape deck will connect directly into the PA550 and the adjustable treble will give it more boost.
Question:	Can you tell me what size is the pot shaft for the knobs on the front - if I wanted to order nee knobs. This would be the size opening on the backsid
Answer:	Yes, plug your turntable into the PA550 phono input. Plug the output of the PA550 into the input of the SE560 then use the output of the SE560 to go to your amp or preamp. Works perfectly. When first set up, set the level controls of both units half way up.

Product description

Features

1.SUCA AUDIO Phono BOX P4 can be use as a Phono preamp as well as a Tube Preamp, 2 in 1 function.( AUX input is with priority).

2.Front AUX Input can connect with mobile phone/ CD / Tablet / PC while the back MM input can connect with MM turntable.

3.39dB/42dB/45dB gain adjustable, convenient to match better with different audio signals.

4.Provide Warmth, Dynamic,Sweet tube coloration feeling with 2 vacuum tubes, tubes can be replaced for different sound feeling.

5.NO hum or buzzing, because of the optimal integrated circuit design and high quality power adapter.



Parameters:

Chip: OP Amp: TL071+JRC2068D

Audio input: MM phono / 3.5mm AUX

Audio output: stereo RCA

Electrical Level Output: 600mV @3mV 1KHz

SNR: ≥98dB

Working Voltage: DC12V

Frequency Response: Meet standard RIAA

Product Weight: 0.66lbs

THD: 0.1%



How to Use PHONO BOX P4

1.Turn the Gain Gear on OFF state.

2.Install the tube into the base of the machine according to the direction (the tube is not divided left or right, check whether the pin is deformed before installing the tube, and the deformation can be corrected by hand).

3.Connect the sound source(AUX in or MM in) with cables.

4.Connect the external equipment to the audio source output interface.

5.Connect the DC 12V power supply.

6.Rotate the switch to select the desired gear.



Package Include

1 * MM PHONO Preamp

2 * Vacuum Tubes

1 * RCA Cable

1 * Power Adapter

1 * User Manual

• 𝄞 Tube Phono Preamp for Turntable: P4 Box Support MM Phono input. Adopt with low-noise integrated circuits and high-quality components that ensure a clear sound quality without low-frequency noise while using. Also, the built-in grounding post design can help to protect your turntable.
• 𝄞 Gain Adjustable Design : 39/42/45 dB gain levels switchable,different output gain is convenient to match different audio signal better, give a customizable control and great listening experience.
• 𝄞 Tube Preamplifier: P4 is not only a MM phono preamp but also a tube preamp with 3.5mm AUX Input. It means that you can connect a MM turntable or devices with 3.5mm jack as input devices to get a better sound quality.(AUX input is with priority)
• 𝄞 Vacuum Tubes Replaceable: Come with 2 vacuum tubes, provides high fidelity warm, dynamic and soft sound beyond your expectation. Also, tubes can be replaced by 6K4 / 6J1 / 6J4 / GE5654 / 6AK5 / 6*1n and ect, you can DIY your stereo ststem with different tubes.
• 𝄞 What You Get: 1 x MM phono tubes preamp, 2 x vacuum tubes, 1 x RCA cable, 1 x DC 12V Power Adapter and 1 x User Manual. LYCHEE LIMITED provide 12 month warranty, 3 month no ask full money refund or replacement service.

User questions & answers

Question:	Can someone tell me what to set my marantz sr6012 too in the input setting i’m by passing the phono input and want to use the cd input
Answer:	If there’s a CD input there should be a CD setting to select to and that’s what you’d want. Typically the inputs in back will have a corresponding setting in front.
Question:	What color are the tubes when on
Answer:	They glow blue.
Question:	Is the output stage digital or tube controlled analog
Answer:	It's analog

Product description

Notice:

As a phono preamp, it is suited for MM turntables only. Do not support MC turntables.

As an AUX preamp, it is suited for devices like CD, DAC, PC, cellphone.

Please note as a phono preamp, it can only work with MM turntables. Please note your turntable should have no built-in phono preamp. If it has, please make sure there is a PHONO OUT/LINE OUT switch and you should put it on PHONO OUT position.

We do not recommend using it with class D amplifiers since most class D amplifiers have much noise.



Parameters:

1. RIAA phono part:

RIAA freq response 20hz-20kHz +/- 0.5dB, S / N ratio> 85dB

THD <0.05%, input sensitivity 3.0mV, gain 40dB

Nominal / max output 300mV / 1.8V

Output impedance 200 ohms, input 47k ohm / 220 pF

2. AUX part:

Input voltage: AC12 ~ 18V

Frequency response: 20 HZ - 20 KHZ

Input sensitivity 300 mv

SNR: 96 db

Total harmonic distortion <3% (1 KHZ)

Power range output: 0.2 W

Output impedance: 100K

Input impedance: 50K



Chassis size:

80×116×28mm



Net weight:

0.24Kg (0.55Kg with package)



Package includes:

1 x preamplifier

1 x power supply

2 x 6J1 tubes



What's more:

It will be better if its GND jack can be really connected to the ground, which can decrease the background noise to a very low level.

For MM turntables, please check whether your MM cartridge is the old version. If so. we suggest you to upgrade it as a new version one will bring much better sound.

Please keep T7 away from devices that can transfer signal like cellphones and routers.

• This product can be used as a MM Turntable Preamp or a HiFi Tube Pre-Amplifier and can provide high fidelity and warm sound beyond your expectation.
• Please do not connect T7 to any inferior Bluetooth digital amplifiers except Class T digital amplifiers, since all Class D amplifiers have very loud background noise.
• Its tube(6J1) can be directly replaced with tubes like 5654, 6AK5, EF95 .etc
• Its mini size makes it more portable and be suited for a variety of scenarios and Its alluminum body makes it strong and elegant.
• Upgrades of the new version: ① The gain switch is moved from inside to outside. Customers can adjust its gain more conveniently; ② The circuit is optimized and the noise is lower.

User questions & answers

Question:	Has anyone used this successfully with a class d amplifier like the smsl ad
Answer:	Had to look this amp up, well it depends what you are using it for to boost your headphones using the 3.5 mm headphone jack but you would have to convert the RCA output jacks to 3.5 mm to feed your headphones. If you are using it to boost the line in to the ad18 you would have to convert the RCA jacks also and use the aux 3.5 mm input only good for 2 channel analog stereo it won't work passing digital through it
Question:	I have a sony ps-6 turntable and a sony ss amplifier ta-2650, could this phono preamplificator works fine if i connect to any of the aux inputs
Answer:	I will share my experience. I have a Technics SL-Q200 and I ordered a ground cable. The Little Bear comes with its own ground cables that looks like roach clips on both ends. I used the Technics ground cable and roached clipped it. I added a small screw in the hole of the Little Bear ground and roach clipped it and that solves the ground. You can replace the left tube with a Jan GE 5654W tube for better articulation and clean robust sound - two 6J1 was a bit noisy. It will still need the 6J1 tube provided to operate on the right slot from front. It should work fine connecting to aux input but be mindful of the grounding required.
Question:	It lookes like it has a aux and phono switch. does this mean i can use it with cd player also
Answer:	Most likely it would work as long it is a decent player and isn't prone to external noise like household appliances, that noise will get amplified along with the desired sound
Question:	Does it introduce much noise into the music
Answer:	This little preamplifier does not introduce noise, with better tube you can reach a smooth sound. A nice equipment at a nice cost.

Product description

Innovative miniature-sized phono preamplifier with tube output and high end sound! The Tube Box S2 is Pro-Ject's very first product to feature a fully discreet circuit design without using any operational amplifiers (OpAmps). It also is the first product to come with replaceable tubes for tube rolling and sound-shaping. This gives you many options to pick from and alter the sound signature to his preference. Tube Box S2 will give a full and relaxed laid back sound with lush mids just like you would expect it from a much bigger high end tube phono pre-amplifier. It offers support for both MM and MC cartridges and comes with many gain settings to be switched on the front panel. Five variable input impedance settings are available to adjust to any MM cartridge the 47k ohms input impedance setting is fixed and suited for high output MC cartridges. The aluminum/metal casing is adapted to our DS2 line in looks and protects against vibrations and electromagnetic interferences for superior sound. A true high-end solution in a much smaller package! What's in the Box: Tube Box S2 Phono Preamplifier Specifications Tube assembly: 2x ECC83 Input impedance: 10/100/470/1k/2k ohms fix 47k ohms Capacitance: 50/150/270/370/490/590pF Gain MM/MC: 40/43/50/60/63dB Signal-to-noise ratio: 77dBA HD + N: 0.0025% RIAA curve accuracy: +/- 0.4dB/20Hz - 20kHz Subsonic filter: 20Hz @ 12dB/octave Input/output: 1x RCA/1x RCA Dimensions (W x H x D): 4.05" x 1.45" x 4.68"

• Suitable for MM and MC cartridges
• Precise RIAA equalisation in two parts passive/active
• Fully discreet circuit design without OpAmps
• 2x ECC83 tubes (replaceable)
• Front-sided Subsonic filter button

User questions & answers

Question:	Does this get hot enough at the bottom that it would damage the amp I was going to stack this on, or is it relatively cool
Answer:	It does run a little warm, tubes have to be heated to work. Will not get warm enough to damage anything. Never too hot to touch. I just love this thing, no regrets.
Question:	Does the unit power off on its own if it doesn’t detect a signal for a period of time ( to preserve tube life
Answer:	There is a small power push button switch on the front left of the unit that you manually turn on and off. There is no auto detect power that I’m aware of.
Question:	I dint see the amperage listed anywhere
Answer:	18V 1amp, is the rating on the power adapter.
Question:	Is this a true tube preamp or integrated tube/solid state preamp
Answer:	A tube pre-amp. It need connect to an integrated amp or a post - amp. It's outstanding!

Product features

Features

• Suitable for MM and MC cartridges
• Precise RIAA equalisation in two parts, passive/active
• Fully discreet circuit design without OpAmps
• 2x ECC83 tubes (replaceable)
• Front-sided Subsonic filter button
• Front-sided Gain control
• Ultra low noise circuitry with FET input stage
• Dual mono circuitry for optimized channel separation
• Gold-plated RCA in- and outputs
• Sandwich alu/metal casing protects from vibrations and electromagnetic interference

• *Multiple input methods to meet your needs,Our this Tube MM Phono Preamplifier have Two input ways:MM signal input(MM Turntable) and 3.5mm AUX input
• *It can be used as a MM phono preamp and a tube preamp, compatible with many audio devices such as MM record player, CD players, DAC, phone,TV, MP3 players, computers And so on. To meet different customer needs
• *With 6A2 vacuum tubes for easy replacement(can be replaced by 6K4/6J1/6J2/6J4/GE5654/6AK5/ 6*1n) sound warm, dynamic and sweet, bringing extremely high-quality listening experience.
• *With DC12V power supply,With gain adjustment switch, convenient to match better with different audio signalsogy,with lossless transmission, perfectly suitable for MM record players and other audio sources
• *The mini MM tube Preamplifier build quality is surprisingly solid,Metal shell,exquisite appearance design,Nice touch!Reasonable internal structure ensure HiFi sound quality and low noise,Let you enjoy sweet and warm sound quality

User questions & answers

Question:	I only get sound from the left speaker, when i reverse the rca only the right plays sound. does it have bad output? Brand new
Answer:	After marking the tubes and with the RCA jacks set correctly, try swapping the tubes between their sockets. If the output changes sides you have a bad tube. If it does not change you have a bad circuit. In either case you will need to contact the seller for corrective action.

Product features

With Gain adjustment design

It have 39, 42, 45 dB three switchable gain modes;

Adjustable gain level design can provide you with customizable control and excellent compatibility

The vacuum tube can be replaced with 6K4/6J1/6J2/6J4/GE5654/6AK5/66*In vacuum tubes, etc.Different tube with different sound.

3.5mm AUX Audio Input

MM signal input and 3.5mm AUX Audio input selectable(AUX input priority)

It can be used as a tube preamplifier to match the audio power amplifier

3.5mm AUX audio input Can connect with phone,tablet,Laptop,PC,TV,DVD,MP3 etc,.

Better meet your needs in a variety of different scenarios

As a MM Turntable Preamp

Perfectly suitable for MM record players and Turntable.

With low-noise integrated circuits and high-quality components, and a powerful internal structure, it can convert phono signals into line-level signals to eliminate low-frequency noise and ensure clear sound quality. Designed with grounding posts to protect your turntable.

Application:

It can be used as a MM phono preamp and a tube preamp;(When the preamp input is input, the phono input will automatically switch to the preamp input,3.5mm AUX Audio input priority)

Compatible with many audio devices such as MM record player, CD players, DVD,DAC, phone,TV, MP3 players, PC,Tablet,Laptop,computers and so on.

With DC12V power supply,Audio output can connect with amplifier, active speaker, etc., red to the right channel, white left channel)

"MM input" only can connect to Phono,It cannot connect analog signal input,such as Phone,PC.

More technical support,pls ask me:www.amazon.com/hz/help/contact/A3BG62S1F23IH5# .Or leave any of your instant messaging account and I'll contact you.thanks!

• 🍎 NOTE: This is a preamplifier, not a power amplifier or phono preamp, can't be used for turntables or passive speakers.
• RCA input to the computer, CD, phone, iPod and other player and RCA output to the digital amplifiers, active multimedia audio devices for lossless audio(The RCA cables not included).
• Small compact design, with optimal integrated circuit to get powerful, dynamic and sweet sound. Tubes can be replaced by 6K4,6AK5,EF95, 5654,403B tubes.
• This pre-amp improves everything detail, transparency, immediacy, richness, tone associated with your music.
• Built-in Switch impact protection circuit and overheat protection circuit, long life span of this unit. All aluminum alloy shell and come with a 18-month manufacturer's warranty.

User questions & answers

Question:	Can this preamp connect to my active speakers? or just connnect to power amplifier
Answer:	Hi, This is a stereo preamplifier, you can connect it to the active speakers or power amplifier than to passive speakers.
Question:	I have this hooked up to bookshelf speakers, sounds great, would i hear a noticable difference hooking it to a subwoofer
Answer:	I currently use the Pre-Amp with a powered subwoofer amp, it works just fine. The P1 has frequency response down to 20hz, so adding a subwoofer may be worth your while.
Question:	Can i hook this up to a 2 channel receiver? i have a pioneer sx-10ae
Answer:	Yes you can if your receiver has output/input jacks for the Fosi to be in a "loop". If you do not have input/output jacks then you would be relegated to installing the Fosi to cd player or turntable or whatever component you are trying to acquire a bit of tube sound. I use mine to "soften "a bright metal tweeter in my speakers. Since I have separate components it was easy to install in my case. Also check to see if your receiver has "preamp" in/out jacks. This would also allow you to install the Fosi to have a effect on your receiver as well as any other components you have connected to it. A bit of research on your part will be required.
Question:	Is there a recommended replacement tube
Answer:	I replaced the stock ones with the Riverstone Audio 7-Pin GE JAN 5654W (https://www.amazon.com/gp/product/B01BFJDTW0/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1). They are very nice tubes but do need about 20-25 hours of solid burn-in before they start to "warm up the sound" in my opinion.

Product features

6K4 Tube Preamplifier

• Power Adapter Output: 12V/1.5A
• Product Adapter Input Voltage Range: AC 110V - 240V
• SNR ≥ 98dB
• THD ≤ 0.1%
• Treble adjustment range: ±6dB
• Bass adjustment range: ±10dB
• Input Mode: RCA
• Frequency Response: 20HZ -20KHZ((±3dB)

Tube preamp with BASS and TREBLE control

Satisfies your need for more sound quality! Great Warm Smooth Sounding!

Simple, thoughtful design

Fosi Audio P1 is easy to connect to your power amplifier or active(powered) speakers with no software to install or settings to change.

Adopt 2pcs 6K4 vacuum tubes

Powerful, dynamic, and sweet TUBE SOUND! Applicable vacuum tube model:6J1,6AK5,EF95, 5654,403B, etc.

• ♪ HIGH QUALITY MATERIALS—The chassis of the preamplifier is made of a solid aluminum alloy material, and uses accurate and stable integrated circuits and high-quality components to eliminate low-frequency noise and ensure clear sound quality; The material of its PCB board is made of FR-4 insulation board and black immersion gold Craft, which has the characteristics of stable signal, high temperature resistance, long service life, and not easy to be oxidized.
• ♪ EXQUISITE APPEARANCE DESIGN—FX AUDIO pre-amplifier has a mini exquisite appearance and light weight, easy to carry around, its brushed texture surface and high-quality tube combine to appear more fashionable ,elegant and Classical.
• ♪ SEPARATE CONTROL OF BASS&TREBLE—The vacuum tube preamplifier can independently adjust the bass and the specific proportion components in high-frequency sound to perfectly achieve HiFi effects. At the same time it can maximize the rendering of an atmosphere like being in a music performance to satisfy your experience of different sound styles in pursuit sound quality.
• ♪ RCA INPUT & OUTPUT—From RCA output ,the preamp can also be directly connected to the audio source and active multimedia audio equipment or indirectly connected to passive audio through the power amplifier(The item includes RCA cable).
• ♪ NOTE—The item just is a tube preamp, not a power amplifier or phono amplifier. Because it is a household circuit design, the home theater tube preamp can not be used in cars, turntables or passive speakers, nor can it directly work for headphones, speakers and can not be used as a phono amplifier.(Only suitable with 12V power cord).Package Include: 1 x tube preamp, 2 x 6K4 tubes,1 x power supply, 1 x RCA cable,1 x user manual, 1 x security card/1 year warranty

User questions & answers

Question:	I'm looking to use these tubes pre-amp for some listening but not all. If you turn it off, can it still pass through the audio signal as a bypass
Answer:	For personal use yes they can be recycled once sanitized correctly. Not sure how many times it can be done. The base many survive longer than the covers.
Question:	What color are the the tubes when lit
Answer:	I haven't measured them, but they are just like a tube of chapstick or Burts Bees tube
Question:	Can output be hooked directly to equalizer
Answer:	Not sure - I gave most away and am just finishing my own. Haven't tried reusing.
Question:	would this work to boost line level signal going from my laptop -> D/A -> [this preamp] -> stereo amp ->speakers
Answer:	Please contact the seller's customer service for a solution. There is contact information on the order page and the manual. We will definitely solve the problem for you！

Product features

In order to dedicated to serve audiophile and display our cultural concept of "enjoy music,enjoy life", FX AUDIO developed the mini electronic tube preamp.

FX AUDIO tube preamplifier is designed by using aluminum alloy shell, PCB board of black immersion gold craft and gold-plated interface, mainly to enhance the weak voltage signal from the audio source and control the sound quality to achieve the effect of beautifying the sound.

Adopt 6K4 Vacuum Tube Design

The audio preamplifier is designed with two 64K vacuum tube, which can simulate natural sound,that is soft and delicate, dynamic and pleasing, strong and powerful, and very penetrating. FX AUDIO Pre-amplifier is the best choice for the friends who have high pursue with the sound timbre. (The tube can also be replaced according to personal preference).

HiFi Sound Quality

The function of the audio quality control of the audio preamplifier is to control the frequency characteristics of the audio system to achieve high-fidelity sound quality, or to modify and beautify the sound according to the listener's preferences, but also to adjust the sound range to achieve balance Make the resolution of sound more natural and transparent.

Wide Compatibility

FX AUDIO tube preamplifier have a wide compatibility,which input can be connected to various audio source equipment, including mobile phones, computers, CD / DVD, etc. From RCA output ,the preamp can be connected the power amplifiers to use ,also can be connected directly to an active speaker.

Product description

Warm Tips

1. 3.5mm AUX input with priority, please make sure the AUX cable has been pulled out if want phono input.

2. Stereo RCA and 3.5mm headphone jack can output at the same time.



Parameters

Audio input: phono/turntable (RCA) / 3.5mm AUX

Audio output: stereo RCA / 3.5mm headphone jack

AUX IN

AUX input level: 1V

RCA max output level: 2V

Frequency response: -1dB(20Hz-20KHZ)

THD: 0.01%

SNR: 100dB

PHONO IN

Phono input level: 0.005V

RCA max output level: 530mW (MM) / 5V (MC)

Frequency response: conforms to RIAA characteristics

THD: 0.2%

SNR: 89dB

Headphone output power: 130mW@32Ω

Matched headphone impedance: 32-300Ω

Working voltage: DC 12V

Dimensions(W*D*H): 50*120*138mm / 1.97*4.72*5.43in

Package dimensions(W*D*H): 320*240*80mm / 12.60*9.45*3.15in

Net weight: 540g / 1.19lb

Package weight: 900g / 1.98lb



Packing List

1*T3 Plus Tube Preamp

1*12V Power Adapter

• Douk Audio T3 PLUS can be used as a MM/MC phono preamp, a tube audio preamp and a headphone amplifier, powerful function in mini size, specially designed for various requirements.
• Multiple audio inputs for different purposes: with 3.5mm AUX and phono inputs, supports both MM and MC cartridges, compatible well with different MM/MC record players and other audio devices to satisfy different demands.
• With headphone output and perfect design: can be used as a headphone amplifier to drive 32-300 ohm headphones. Reasonable and advanced circuit and high-quality components, such as power 3PCS JRC2608 op amps, high-end power management part etc.
• Pluggable Vacuum tube design and HiFi sound: using 6A2 tubes to soften, sounds warm and delicate, full and mellow, much softer and more listenable. Can be directly replaced by 6J1/6J4/ GE5654/6AK5/6*1N to enjoy different sound styles.
• Unique appearance and proper size: vertical placement design, black solid aluminum chassis with wire drawing and frosted technology, looks cool and distinctive, both enjoyment of auditory and visual, very suitable for the audiophiles who pursue HiFi sound.

Product description

The DJ PRE II (formerly named the "Phono MicroPRE") acts as an interface between your turntable and your audio recording / playback system. The analog input capacitance can be switched between 100pF and 200pF to optimize your phono cartridge response. A switchable low cut filter removes turntable rumble while leaving the audio pristine. The front gain trim control and signal/clip LED allow you to optimize the preamp's gain for a wide range of input sources. The built-in low noise phono preamp circuitry is highly accurate and precisely conforms to the RIAA standard. The line output jacks are low impedance and can be used with any sound card.



Housed in an all aluminum black anodized case, the DJ PRE II can be powered by a wide variety of external supplies. If you need to amplify and EQ your vinyl records to interface with your audio workstation, sound card, home stereo system or main monitor system, the DJ PRE II gives you flawless audio reproduction in a rugged and reliable package.

• Dual RCA-type inputs
• Dual RCA-type outputs
• Ground terminal
• Power: 12V DC (Adapter included)
• Dimensions: 1.75 H x 4.2 W x 3.5 inches D (44.5 x 107 x 89mm)

User questions & answers

Question:	Would a jensen jta-230 3 speed stereo turntable work with this
Answer:	Hi, customers. Please press and hold the middle button for more than 5 seconds until the blue light of the button flashes, which is to restore the factory settings.
Question:	does this unit have an on/off stwich
Answer:	It is a plug-in power supply, to an electrical outlet, then to operate on a cell phone or computer.
Question:	how do i know which capacitance option to use (100pf or 200pf
Answer:	Cannot get it to work. Directions not in English.
Question:	Is this what I need to plug an older turntable into a new receiver/amp that does not have a phono jack? When I plug in AUX, there is no sound
Answer:	This is a USB power supply through the computer, laptop, and used for office, entertainment, learning a Sound Bar speaker, 6W power, clear sound, to meet the general needs of the game sound is a good choice, and it saves space, not messy desktop.

Product features

DJPRE II

The DJ PRE II (formerly named the "Phono MicroPRE") acts as an interface between your turntable and your audio recording / playback system. The analog input capacitance can be switched between 100pF and 200pF to optimize your phono cartridge response. A switchable low cut filter removes turntable rumble while leaving the audio pristine. The front gain trim control and signal/clip LED allow you to optimize the preamp's gain for a wide range of input sources. The built-in low noise phono preamp circuitry is highly accurate and precisely conforms to the RIAA standard. The line output jacks are low impedance and can be used with any sound card.

Housed in an all aluminum black anodized case, the DJ PRE II can be powered by a wide variety of external supplies. If you need to amplify and EQ your vinyl records to interface with your audio workstation, sound card, home stereo system or main monitor system, the DJ PRE II gives you flawless audio reproduction in a rugged and reliable package.

ARTcessories

ARTcessories are taking the audio world by storm and quickly becoming a popular brand with musicians, DJs and studio engineers everywhere around the World. Split, combine, mix, power... you name it. On stage, in the studio, in your living room, they’re easy to use and are built to last. For those times when you need a little box to fix a big need or to make more out of a smaller project, ARTcessories has you covered. You’ll discover a robust line of useful tools which include a complete range of direct boxes, headphone amps, small mixers, mic cable combiner/splitters and much more. ARTcessories are designed to deliver affordable solutions for a multitude of audio needs for any size project.

Product description

VP549 phono pre has excellent true sound resolution. It's tone center is right in the middle of the music. It performs very well on the extremes, and never looses its solid performance in the meat of the music. Has a well rounded sound when needed, but has a very surprising shimmer when called on. The VP549 is bold, yet has a very surprising attack that will take your rig to the next level. Hundreds of hours went in to listening and improving the design. All Bellari products are hand built in Salt Lake City, Utah by people who care about high quality music. No surface mount parts are ever used at Bellari.

• The RIAA equalization curve was intended to operate as the global industry standard for records since 1954. However, it is almost impossible to say when the change actually took place.
• Reducing the low frequencies also limits the excursions the cutter needs to make when cutting a groove. Groove width is thus reduced, allowing more grooves to fit into a given surface area
• This also reduces physical stress on the stylus which might otherwise cause distortion or groove damage during playback

User questions & answers

Question:	What is a rumble filter
Answer:	It cuts low frequency drive noise and motor noise.
Question:	Since there is no power button, do y'all unplug it after use or just leave it always on
Answer:	I just have it on a power strip with other components and turn everything off at all at once. That way I don't have to turn everything on again when I use it as everything is on one outlet power strip makes it much easier.
Question:	With what does it come with? Beside the power cord
Answer:	If I remember correctly, the power cord is all that is included.
Question:	Can i order 220vav 50hz or 240vav 50hz version? and how to do
Answer:	- The Power supply for the Bellari units is a 100v to 240v 50 or 60 Hz switching supply so it will work in all country's (you will just need to get the proper outlet adapter to fit the wall outlet). Another option is If you order from an authorized Bellari dealer that is international or ships international a identical adapter 100v to 240v 50 or 60 Hz with a German plug is available for an up charge (the PS27e). This is not possible with Amazon.

Product description

Warm tips:

1. This is preamp, cannot drive passive speaker directly, need to be used with power amplifier.

2. Default 6J1 vacuum tubes, if you want upgraded US GE5654 tubes please visit:

3. Cannot input DC voltage, or else it will not work or damaged directly.



Features:

With standard stereo RCA input, compatible with many audio devices such as phone,TV, MP3 players, CD players, DAC, computers etc. Connected between audio source and power amplifier to effectively filter the digital sound, making the human voice more real.

Reasonable and simple curcuit layout, the sound is clear with low noise, adopting 2PCS 6J1 vacuum tubes. The tube buffer is amplified by about 2 times, the sound is warm and sweet, full with dynamic. Pluggable tube socket design, easier to change GE5654 tubes and upgrade the sound.

Mini size with exquisite appearance, acrylic chassis looks great when the tubes are giving out blue light, very suitable for home / office desktop audio system use.



Parameters:

Audio input: stereo L/R RCA

Audio output: stereo L/R RCA

Number of Channels: 2.0

Output impedance: 4-8Ω

Working voltage: AC 12V

Dimensions(W*D*H): 81*81*43mm / 3.19*3.19*1.69in

Net weight: 170g / 0.37lb

Package weight: 560g / 1.23lb



Packing List:

1*Tube Preamp

1*AC 12V Power Adapter

• With standard stereo RCA input, compatible with many audio devices such as phone,TV, MP3 players, CD players, DAC, computers etc. Connected between audio source and power amplifier to effectively filter the digital sound, making the human voice more real.
• Reasonable and simple curcuit layout, the sound is clear with low noise, adopting 2PCS 6J1 vacuum tubes. The tube buffer is amplified by about 2 times, the sound is warm and sweet, full with dynamic. Pluggable tube socket design, easier to change GE5654 tubes and upgrade the sound.
• Mini size with exquisite appearance, acrylic chassis looks great when the tubes are giving out blue light, very suitable for home / office desktop audio system use.

User questions & answers

Question:	It's supposed to act as a preamp for a turntable? i plugged my tt into it and then to the amp but the signal is way too low and hi eq ish
Answer:	Its not a phono pre amp.
Question:	I have a keyboard synthesizer with a low volume signal. Is this suitable for increasing the gain before connecting a power amplifier and speakers
Answer:	Absolutely, it adds warm, full range boost to the signal. I use mine as a preamp For my turntable, and it sounds amazing. I’m impressed how gorgeous this sounds for the price. I’m a guitarist of 23 years, and I have yet to use this as a preamp for my effects loop, but now that you mention it I think it will be perfect for that application.

Product description

Features:

1.All aluminum alloy shell,heavy gold PCB,gold-plated interface.

2.Provide Warmth, Dynamic,Sweet tube coloration feeling.

3.Optimize integrated circuit and high quality power adapter to minimize the noise.

4. Vacuum Tubes detechable and replaceable.

5.With Treble and Bass control function, high playability.

6.Compact Design, space saving.



SOMETHING SHOULD BE KNOW

- It is NOT a phono preamp for turntable. To order a PHONO Preamp, please visit B07QBXV3CG.

- The preamp need to connect with a power amplifier or active speaker, can not connect with a passive speaker directly.

- Low-quality audio lines and power adapter will generate noise as a result.



Specifications:

Power Supply: DC 12V/1.5A

Frequency Response: 20HZ -20KHZ((±3dB)

SNR: 98DB

THD: 0.1%

Control：Potentiometer knob and toggle switch

Treble adjustment range: ±6dB

Bass adjustment range: ±10dB

Audio Inputs/Audio Outputs: Gold-plated RCA

Machine Size: 118.5*98*33mm(4.64 * 3.86 * 1.3 inch)



Package Include:

1 x Tube Preamplifier

2 x 6K4 Tube

1 x Power Adapter



About the Noise:

1. Make sure the RCA cables, the tubes and the adapter are connected well.

2. After that, if there's a noise while useing, please change the adapter(12V/1A or 2A) and try again.

3. If there still a noise, please contact with us via email. We provide 3 month no asked refund and 12 month guarantee, will make a solution to you.

• 🎵NOTICE - This is a preamplifier but NOT a power amplifier or a phono preamp, CAN'T be used for turntables or passive speakers. The main purpose of this machine is to act as a "buffer" to sweet the sound.
• 🎵SWEET TUBE SOUND - Vacuum tube preamp will give you a different acoustic enjoyment with dynamic, sweet tube sound enjoyment. Improve the details, richness, tone associated with your music.
• 🎵TUBES REPLACEABLE - The 3D sound quality of a good tube implementation is simply divine! Tubes detachable design, you can replace the tube to tweaking the sound, 6j1,6j2,6J4,GE5654,6AK5 and 6*1n tubes are suitable for this preamp.
• 🎵 RCA INPUT & OUTPUT - Connect your computer, CD, phone, iPod and other player with RCA cables input and output to the digital amplifiers, active multimedia audio devices for lossless audio(The RCA cables not included).
• 🎵 SAFE DESIGN & AFTER SALE SERVICE: All aluminum alloy shell, compact and durable.Built-in Switch impact protection circuit and overheat protection circuit, long life span of this unit. Provide 12-month manufacturer's warranty, no risk purchase.

User questions & answers

Question:	Can i use this product from a 3.5 mm headphone jack on a tablet to a rca line input on a stereo receiver
Answer:	Yes, you will need to use a cable that has RCA plugs in one end and a headphone plug (1/8") on the other. The headphone plug goes into the tablet and the RCA plugs go into the input of the SUCA-AUDIO. You will use another cable with RCA plugs on both ends. Plug in the RCA plugs on one end into the outputs of the SUCA-AUDIO. The RCA plugs on the other end go into your stereo receiver inputs.
Question:	I'm using philips shp9500 headphones. at a maximum of 32 ohms, could i just combine my headphones with this pre-amplifier without an amp? (pc dac
Answer:	This is a pre-amplifier, not a headphone amplifier. Headphones like the Sennheiser HD6xx could be used because of their high impedance (600 ohms) at a low volume. The 32 ohm Philips headphones may cause issues with this pre-amp.
Question:	I am looking to make the audo louder from my computer to amplifier will this do it? thanks
Answer:	Not really . . . : A preamp (and this is a preamp) only raises the volume of the signal slightly . . . an amp, or amplifier raises it to levels that can power passive speakers. Active speakers have an amp built in. So, you can go from computer to an amp, or from a computer to powered speakers and don't need a preamp. Or, go from the computer to this preamp, then to an amp or powered speakers. You don't NEED a preamp at all if you have an amp, but you can use one if you want to add a volume knob in between the source and speaker, or want to add a tube pre like this for 'color' to alter the qualities of the sound. Sounds like you want an AMP not a preamp otherwise.
Question:	could I use this for a turntable preamp if I had powered speakers
Answer:	No. This preamplifier does not apply RIAA equalization that vinyl playback requires. You will notice that the treble is too loud and bass is severely reduced when you play vinyl.

Product description

rolls. Phone; Preamp; Amplifier

• phone
• PREAMP
• amplifier

User questions & answers

Question:	Does the ac adapter for the vp29 handle both 110v and 220v current
Answer:	The AC adapter I got can handle both 110v and 220v. I'm using it on 220v.
Question:	Is there a switch for selecting mc or mm inputs from the turntable
Answer:	No. There is no switch.
Question:	Where can I find a compatible replacement power cable
Answer:	Google/Amazon/eBay search!
Question:	Is this preamp good for electric guitar running to a mixer
Answer:	No, this is a phono pre-amp to use with a turntable to play vinyl records

Product features

Rolls Phono Preamp, Red (VP29)

The VP29 is a briliant phono preamplifier. Its circuitry is designed not only to provide the exact RIAA equalization curve, but smooth and quiet operation.

• Input Sensitivity: 42 dB gain 1kHz, 47k Ohms, Input Capacitance: 120pf
• Sensitivity: 5mV for 635mV output, Input Impedance: 47k Ohms
• Frequency Response: / - .5 dB 20 Hz - 20 kHz (Conforms to RIAA Equalization Curve)
• PWR: 9 - 15 VDC, THD .01% 1 kHz, S/N Ratio: >83 dB unweighted
• Output Impedance: 1K Ohms
• Size: 3.25" x 2" x 1.5", RIAA Equalization
• RCA inputs/outputs - 1/8 inch (3.5mm) TRS output.
• AC adapter included