10 best pulse tube amps
Pulse tube amplifiers, also known as pulse tube refrigerators, are devices primarily used in the field of cryogenics and refrigeration rather than in electronics or power accessories. These devices are designed to produce very low temperatures by utilizing a combination of thermodynamic and acoustic principles. Here's a brief overview of how they work:
Basic Operation: A pulse tube amplifier operates on the principle of the Gifford-McMahon cycle, which is a type of thermodynamic refrigeration cycle. It's worth noting that the term "amplifier" can sometimes be used interchangeably with "refrigerator" in this context.
Gas Expansion and Compression: The heart of a pulse tube amplifier is a closed-loop tube filled with a gas, often helium.The gas undergoes cyclic expansion and compression phases driven by a mechanical oscillator or a piezoelectric actuator. The expansion and compression of the gas cause it to absorb and release heat at specific points in the cycle.
Heat Exchange: The gas's cyclic compression and expansion create temperature differences along the length of the tube. Typically, there are heat exchangers (often made of porous materials or screens) at the hot and cold ends of the tube. These heat exchangers facilitate the transfer of heat between the gas and the surrounding environment.
Net Cooling Effect: As the cycle repeats, the gas inside the pulse tube amplifier achieves a net cooling effect at the cold end, which can reach very low temperatures, often close to absolute zero (around -273 degrees Celsius or -459 degrees Fahrenheit). This cooling effect is used for various cryogenic applications, such as cooling infrared detectors or scientific research experiments.
Applications: Pulse tube amplifiers are used in scientific laboratories, aerospace technology, and medical applications where precise and efficient cryogenic cooling is required. They have advantages over traditional cryogenic refrigeration methods, such as Stirling and Gifford-McMahon refrigerators, due to their lack of moving parts in the low-temperature region and relatively simpler design.
While pulse tube amplifiers are important for cryogenic applications and cooling systems, they are not typically associated with AC adapters, power accessories, or consumer electronics. These devices are highly specialized and are primarily used in scientific and industrial settings where ultra-low temperatures are necessary for various research and technology applications.
Below you can find our editor's choice of the best pulse tube amps on the market
Heartbeat Guitar Amp Shirt - Vintage Tube Amp Guitar Pulse
Heartbeat Guitar Amp Shirts
- Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester
- Imported
- Machine wash cold with like colors, dry low heat
- If you love rockin' with your Vintage Analog Tube Amp or Analog Guitar Pedals and your Guitar, this funny Pulse Guitar Heartbeat Tshirt with a Analog Vacuum Tube is the perfect gift for you.
- Impress your friends and family with our funny Heartbeat Guitar Amp T-Shirt. It is also great as a Guitar Christmas Shirt or Birthday Gift for Electric Guitar Players.
- Lightweight, Classic fit, Double-needle sleeve and bottom hem
PM15H - Guitar Tube Amplifier Head - 15W, 2 Channel, Effects Loop
PULSE
Product description
PM15H - Guitar Tube Amplifier Head - 15W, 2 Channel, Effects Loop
- Price For: Each Product Range: - Plug Type: -
User questions & answers
| Question: | Is this class A or class A/B |
| Answer: | No |
| Question: | how many of what kinds of tubes does it have |
| Answer: | It should. If the head tube is 1 1/8”. Check your measurements but this is standard type fork for a bike like the 3700. |
| Question: | What are the dimensions of this head |
| Answer: | First of all this fork never came in to my door and I don’t know why I have to answer this answer!!!? |
| Question: | What is the output impedance and is there just a mono out or are there stereo outs on the rear? (no pictures of the back to see |
| Answer: | Yes |
PM60H - Guitar Tube Amplifier Head - 60W, 2 Channel, Effects Loop, DSP Effects
PULSE
Product description
PM60H - Guitar Tube Amplifier Head - 60W, 2 Channel, Effects Loop, DSP Effects
- Price For: Each Product Range: - Plug Type: -
PKPOWER AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
PKPOWER
Product description
PKPOWER AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSUSpecifications:
Brand: PKPOWER
Input Voltage: AC 100-240V, 50/60Hz
Cord Lenth: 6.6FT(2m)
Quantity: 1 Unit Power Adapter
- Advanced Design, High Portability Brand New Replacement Chargers
- Input Voltage: AC 100-240V, 50/60Hz
- Cord Lenth: 6.6FT(2M)
- Tested Units. In Great Working Condition.COMPATIBILITY: Please see full list of compatible models in the Product Description
- OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection)
WeGuard AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
Product description
Feature：
Input Voltage： 100-240VAC 50/60Hz
Please confirm your device model before you buy our product.
OVP、OCP and SCP protection
30 days refund guarantee
How to contact us？
You can contact us directly from Your Account. Locate the order and click the "Problem with this order?" button.
Then select the "Contact Seller" button to send us an e-mail message. We would be glad to solve any problem for you within 24 hours.
Your support to our business and your patience on the matter will be really appreciated.
Package including:
1 x Charger
- Input Voltage： 100-240VAC 50/60Hz
- Note: please confirm your device model before purchase.
- OVP、OCP and SCP protection：Over Voltage output Protection、Over Current output Protection and Short Circuit output Protection.
- The order will be shipped from the US within 24 hours from Monday to Friday.It can be delivered in 2-6 days.
- Warranty：WeGuard will provide you with higher quality products and better service.If you are not satisfied with our products, please contact us in time, 30 days refund guarantee.
ABLEGRID AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
ABLEGRID
Product description
ABLEGRID AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
- ◆〖Modern Design〗: Ablegrid Brand Replacement Product.( NOT Genuine ) Tested Units. In Great Working Condition.
- ◆〖SAFETY〗 - Replacement Product! (Non-OEM but 100% Compatible)//
- ◆〖Quality Assurance〗: ABLEGRID charger is certificated with CE, ROHS standard.
- ◆〖Highly Protection〗: Overcharge Protection, Overcurrent Protection, Overvoltage Protection, Short Circuit Protection.
- ABLEGRID AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
SupplySource AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
SupplySource
Product description
SupplySource AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
Notice:
1. Please make sure the DC output and tip size of ac adapter are accordant before you order.
2. If you use the adapter for a long time, please keep it suitable ventilating and humidity. Do not put it on the skin products.
3. Please feel free to contact us if you have further questions.We will be more than happy to assist you
- ✔SAFETY: SupplySource Products manufactured with the highest quality materials and include multiple smart features safeguarding against IV - incorrect voltage, SC - short circuit, IO - internal overheating . Chargers are certificated with CE FCC etc.
- ✔POWER SPECS - Input Volt Range: 100-240V / Input Frequency : 50-60Hz / Cable Length: 4FT
- ✔NOTE: This Adapter is Brand New, High Quality Never USED (non-OEM). Please make sure the model of your device before buying
- ✔AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
- ✔WARRANTY: 30 Days Money Back Guarantee / 60 Days Free Exchange With Paid Return Label / 720 Days Anytime Worry-Free Warranty! Please contact us with any questions or concerns.
DigipartspowerAC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
Product description
Notice:
1. Please make sure the DC output and tip size of ac adapter are accordant before you order.
2. If you use the adapter for a long time, please keep it suitable ventilating and humidity. Do not put it on the skin products.
Service Information:
For your own interests and safety, if there is any abnormal condition when using the product, please stop using it immediately and contact with our customer service center
How to contact us？
You can contact us directly from Your Account. Locate the order and click the "Problem with this order?" button.
Then select the "Contact Seller" button to send us an e-mail message. We would be glad to solve any problem for you within 24 hours.
Your support to our business and your patience on the matter will be really appreciated.
Warranty:
30 Days Money Back Guarantee / 60 Days Free Exchange With Paid Return Label / 360 Days Anytime Worry-Free Warranty! / Please contact us with any questions or concerns - we are here to help!
DigipartspowerAC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
- Our products are CE / FCC / RoHS certified, tested by the manufacturer to match and / or exceed the OEM specifications, Digipartspower Made with the Highest Quality / Brand-new Input Voltage Range: AC 100V - 240V
- Note:Pls make sure the output and tip size is correct. Check Connector Photo to Ensure Compatibility.
- 30 Days Money Back Guarantee if you are not satisfied with our products.
- We focus on providing quality power products and excellent customer service / we will ship your order within-24 hours Mon - Fri,pls feel free to contact with us if any concern.
- OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection) Tested Units. In Great Working Condition.
FITE ON UL Listed AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
Product description
AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
This adapter from FITE ON is approved for Sale in the US and Canada by Underwriters Laboratories (UL) and Got the certificates. with short circuit protection,over-current protection, over-voltage protection, overload protection, over temperature protection.
It’s a fact- our adapter has been constructed according to the latest requirements of level VI energy efficiency,ABSOLUTE ENERGY-SAVING. Maximize your adapter’s usage while spending the minimum amounts of energy! Save money now- as all the energy will be efficiently used without unnecessary loss.The most cost-effective adapter is here- get it now without thinking too much!
The most important is, it will neither do harm to your family, nor your device!
☛AC Adapter Specifications:
* Input Voltage: 100-240, 50-60 Hz
*DC Line Length: 5ft/1.5m
☛Warm Tip:
★Keep the adapter dry, do not store or use adapter in hot and cold environment. If you use the charger for a long time, please keep it suitable ventilating and humidity.
★Please feel free to contact us if you have further questions.
- ➤ CABLE LENGTH: 5FT/1.5M
- ➤ SHIPPING: Same Day Shipping ! Except weekends and Holidays!
- ➤ SPECIFICATIONS: Input Voltage : AC 100-240V (Worldwide AC Input)
- ➤HIGH EFFICIENCY: Charging your device more efficient than normal,will not emit out any physical noise!
- ➤UL LISTED & RISK FREE: It was approved by a security and stability of the intelligent testing. High-end Laboratory Quality Guaranteed.
K-MAINS AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
Product description
K-MAINS AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
- Safety: Our Products are CE / FCC / RoHS certified, tested by the manufacturer to match and / or exceed the OEM specifications. OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection)
- This Adapter is a Brand New, High Quality Never USED (non-OEM)
- Compatiblity: AC Adapter Charger for Laney IRT-Pulse Ironheart Tube Pre Amp & Recording Interface Power Supply Cord PSU
- Note:please make sure the model of your device before buying
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