Vacuum Tube Amplifier

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Vacuum Tube Amplifier EBay Bargains!

Douk Audio 6J1+6P1 Vacuum Tube Amplifier Single-en
Douk Audio 6J1+6P1 Vacuum Tube Amplifier Single-en
Ends in 7 Hours 17 Minutes 8 Seconds
Current price: $104.50 (10 bids)
Douk Audio KT88 Vacuum Tube Amplifier High-End Sin
Douk Audio KT88 Vacuum Tube Amplifier High-End Sin
Ends in 1 Days 13 Hours 2 Minutes 25 Seconds
Current price: $469.00 (4 bids)
Dared MP-5 Hifi  AMP Valve Vacuum Tube Amplifier U
Dared MP-5 Hifi AMP Valve Vacuum Tube Amplifier U
Ends in 2 Days 2 Hours 4 Minutes 28 Seconds
Current price: $299.00 (0 bids)
 Spark Cayin  A-88TMK2 KT88 Integrated vacuum tube
Spark Cayin A-88TMK2 KT88 Integrated vacuum tube
Ends in 2 Days 8 Hours 30 Minutes 6 Seconds
Current price: $1,760.00 (0 bids)
Douk Audio Class A Single-ended FU32 Vacuum Tube A
Douk Audio Class A Single-ended FU32 Vacuum Tube A
Ends in 3 Days 6 Hours 3 Minutes 14 Seconds
Current price: $217.00 (10 bids)
Cayin MT-35MK2  EL34x4 class AB1 push-pull vacuum
Cayin MT-35MK2 EL34x4 class AB1 push-pull vacuum
Ends in 5 Days 1 Hours 7 Minutes 49 Seconds
Current price: $699.00 (1 bid)
6P14(EL84/6BQ5) Hi-Fi Single-ended Class A Vacuum
6P14(EL84/6BQ5) Hi-Fi Single-ended Class A Vacuum
Ends in 5 Days 7 Hours 19 Minutes 20 Seconds
Current price: $179.55 (0 bids)
Douk Audio Hi-End EL34 Vacuum Tube Amplifier HiFi
Douk Audio Hi-End EL34 Vacuum Tube Amplifier HiFi
Ends in 6 Days 30 Minutes 33 Seconds
Current price: $249.00 (1 bid)
Douk Audio Bluetooth 4.0 EL34 Vacuum Tube Amplifie
Douk Audio Bluetooth 4.0 EL34 Vacuum Tube Amplifie
Ends in 6 Days 1 Hours 21 Minutes 53 Seconds
Current price: $289.00 (3 bids)
ShuguangSG-211 Vacuum Tube Amplifier 2A3 push 211
ShuguangSG-211 Vacuum Tube Amplifier 2A3 push 211
Ends in 6 Days 2 Hours 52 Minutes 57 Seconds
Current price: $1,530.00 (0 bids)
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Ends in 7 Days 1 Hours 28 Minutes 18 Seconds
Current price: $245.10 (11 bids)
6P14 / EL84 Vacuum Tube Amplifier Class A Single-e
6P14 / EL84 Vacuum Tube Amplifier Class A Single-e
Ends in 8 Days 1 Hours 28 Minutes 28 Seconds
Current price: $169.10 (1 bid)
Mini Desktop Stereo Vacuum Tube Amplifier Amp HiFi
Mini Desktop Stereo Vacuum Tube Amplifier Amp HiFi
Ends in 9 Days 2 Hours 20 Minutes 25 Seconds
Current price: $160.00 (10 bids)
Douk Audio Mini Single-ended 6P14&EL84 Vacuum Tube
Douk Audio Mini Single-ended 6P14&EL84 Vacuum Tube
Ends in 9 Days 4 Hours 54 Minutes 33 Seconds
Current price: $215.00 (11 bids)
Douk Audio Mini Desktop 6P31B Vacuum Tube Amplifie
Douk Audio Mini Desktop 6P31B Vacuum Tube Amplifie
Ends in 10 Days 5 Hours 33 Minutes 11 Seconds
Current price: $123.50 (0 bids)
Douk Audio Bluetooth KT88 Vacuum Tube Amplifier Si
Douk Audio Bluetooth KT88 Vacuum Tube Amplifier Si
Ends in 10 Days 5 Hours 33 Minutes 30 Seconds
Current price: $488.00 (2 bids)
HiFi 6n8p Push 6p1 Vacuum Tube Amplifier Single-En
HiFi 6n8p Push 6p1 Vacuum Tube Amplifier Single-En
Ends in 10 Days 15 Hours 9 Minutes 38 Seconds
Current price: $165.00 (3 bids)
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Ends in 12 Days 11 Hours 59 Minutes 53 Seconds
Current price: $235.00 (8 bids)
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Ends in 13 Days 7 Hours 32 Minutes 24 Seconds
Current price: $286.00 (3 bids)
Douk Audio 6P3P Vacuum Tube Amplifier Single-ended
Douk Audio 6P3P Vacuum Tube Amplifier Single-ended
Ends in 16 Days 5 Hours 58 Minutes 23 Seconds
Current price: $138.70 (4 bids)
Douk Audio KT88 Single-ended Class A Vacuum Tube A
Douk Audio KT88 Single-ended Class A Vacuum Tube A
Ends in 17 Days 4 Hours 18 Minutes 51 Seconds
Current price: $299.00 (1 bid)
Douk Audio EL34 Vacuum Tube Amplifier Class A sing
Douk Audio EL34 Vacuum Tube Amplifier Class A sing
Ends in 17 Days 4 Hours 28 Minutes 45 Seconds
Current price: $246.00 (2 bids)
Douk Audio 6P3P Vacuum Tube Amplifier Stereo HiFi
Douk Audio 6P3P Vacuum Tube Amplifier Stereo HiFi
Ends in 17 Days 4 Hours 49 Minutes 1 Seconds
Current price: $159.00 (1 bid)
Douk Audio KT88 Vacuum Tube Amplifier HiFi Single-
Douk Audio KT88 Vacuum Tube Amplifier HiFi Single-
Ends in 17 Days 4 Hours 50 Minutes 3 Seconds
Current price: $339.00 (4 bids)
Hi-End 300B Vacuum Tube Amplifier Single-ended Pow
Hi-End 300B Vacuum Tube Amplifier Single-ended Pow
Ends in 17 Days 4 Hours 50 Minutes 21 Seconds
Current price: $850.00 (2 bids)
Douk Audio Stereo EL34 Vacuum Tube Amplifier Hi-Fi
Douk Audio Stereo EL34 Vacuum Tube Amplifier Hi-Fi
Ends in 18 Days 1 Hours 35 Minutes 24 Seconds
Current price: $235.00 (2 bids)
Douk Audio 300B Vacuum Tube Amplifier HiFi 2.0 Cha
Douk Audio 300B Vacuum Tube Amplifier HiFi 2.0 Cha
Ends in 18 Days 1 Hours 36 Minutes 3 Seconds
Current price: $399.00 (3 bids)
Class A Single-ended EL84 Vacuum Tube Amplifier He
Class A Single-ended EL84 Vacuum Tube Amplifier He
Ends in 18 Days 5 Hours 3 Minutes
Current price: $659.00 (4 bids)
Bluetooth 4.0 Hi-Fi Vacuum Tube Amplifier Stereo H
Bluetooth 4.0 Hi-Fi Vacuum Tube Amplifier Stereo H
Ends in 22 Days 7 Hours 35 Minutes 56 Seconds
Current price: $169.00 (2 bids)
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Ends in 22 Days 7 Hours 54 Minutes 49 Seconds
Current price: $230.00 (5 bids)
6P14(EL84)Single Ended Tube Amplifier  Hifi Audio
6P14(EL84)Single Ended Tube Amplifier Hifi Audio
Ends in 25 Days 7 Hours 10 Minutes 33 Seconds
Current price: $239.00 (0 bids)
Nobsound DX-925 Vacuum Tube Amplifier Bluetooth 4.
Nobsound DX-925 Vacuum Tube Amplifier Bluetooth 4.
Ends in 25 Days 7 Hours 47 Minutes 28 Seconds
Current price: $350.00 (0 bids)
2 x 80 W stereo vacuum tube amplifier chassis for
2 x 80 W stereo vacuum tube amplifier chassis for
Ends in 26 Days 32 Minutes 43 Seconds
Current price: $190.00 (0 bids)
6N2+FU32 Vacuum Tube Amplifier/Headphone Amp Class
6N2+FU32 Vacuum Tube Amplifier/Headphone Amp Class
Ends in 26 Days 6 Hours 31 Minutes 21 Seconds
Current price: $189.00 (14 bids)
Douk Audio 6P14 Vacuum Tube Amplifier Single-Ended
Douk Audio 6P14 Vacuum Tube Amplifier Single-Ended
Ends in 27 Days 6 Hours 32 Minutes 4 Seconds
Current price: $139.00 (11 bids)
Douk Audio Stereo EL34 Vacuum Tube Amplifier Singl
Douk Audio Stereo EL34 Vacuum Tube Amplifier Singl
Ends in 27 Days 7 Hours 9 Minutes 17 Seconds
Current price: $249.99 (0 bids)
Douk Audio Stereo EL34 Vacuum Tube Amplifier HiFi
Douk Audio Stereo EL34 Vacuum Tube Amplifier HiFi
Ends in 27 Days 10 Hours 33 Minutes 6 Seconds
Current price: $199.00 (30 bids)
Douk Audio 2A3 Vacuum Tube Amplifier Stereo Hi-Fi
Douk Audio 2A3 Vacuum Tube Amplifier Stereo Hi-Fi
Ends in 28 Days 1 Hours 47 Minutes 56 Seconds
Current price: $399.00 (0 bids)
Douk Audio 6J8P+FU50 Vacuum Tube Amplifier Single-
Douk Audio 6J8P+FU50 Vacuum Tube Amplifier Single-
Ends in 28 Days 5 Hours 53 Minutes 8 Seconds
Current price: $190.00 (3 bids)
Bluetooth 4.0 HiFi Vacuum Tube Amplifier Stereo Cl
Bluetooth 4.0 HiFi Vacuum Tube Amplifier Stereo Cl
Ends in 28 Days 7 Hours 14 Minutes 45 Seconds
Current price: $165.00 (16 bids)
View more Vacuum Tube Amplifier on eBay


Vacuum Tube Amplifier Amazon Deals!

Nobsound NS-08E Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone AmpNobsound NS-08E Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp

Specifications:

Output power: ≥1100 mW (32 ohm)
Headphone Adapter Impedance: 18-600 ohm
Total harmonic distortion:

Cary Audio SLI-80 Integrated Tube Amplifer (Black)Cary Audio SLI-80 Integrated Tube Amplifer (Black)

For many years the SLI-80 integrated amplifier has represented Cary Audio's least expensive entry into the magic of tube music systems. Thousands of satisfied music lovers have used the SLI-80 with all types of other equipment, and just continue to use it after the rest of their systems change. It features three pairs of RCA single-ended inputs, a pair of preamplifier outputs to use it for biamping or adding a powered subwoofer, a switchable headphone amplifier, and a remote control to adjust volume or mute the sound. The amplifier section of the SLI-80 has a feature allowing you to decide how to configure the tubes on the fly, depending on your musical tastes of the moment, your speakers, and how loudly you want to listen. A pair of toggle switches will select either triode mode producing 40 watts per channel of pure class-A power, or ultra linear mode which doubles power to 80 watts per channel in class-AB. If you're listening to more subtle music and want to hear all of the inner detail, select triode mode for the most lifelike imaging and tonal accuracy. If you want to really let loose, switch to ultra linear mode and enjoy the extra power and dynamics. Your choice!


GemTune GS-01 Class A Integrated Hi-Fi Tube Amplifier with Tubes: EL342 + 6N9P2 +5AR41GemTune GS-01 Class A Integrated Hi-Fi Tube Amplifier with Tubes: EL342 + 6N9P2 +5AR41

With the classic tubes matching: 6N9P+EL34, GemTune GS-1 Tube Amplifier brings you firm and full mids, smooth highs and also deep lows. It is perfect for vocals (natural and sweet), strings, pipes and jazz. If you would like a tube amp with balance tone, putting it in your living room to enjoy the pure and clean music with a glass of wine during your leisure time. GemTune GS-1 is the one!

Please download the user manual from: https://s3.amazonaws.com/Doctor-001/GemTune+Amp/GemTune+GS-01.pdf
Don't suggest to connect regular headphone jack to amp. Recommend to use Lineout jack.

Specification:
Input Voltage: 110V
Output Power: 8W*2
Frequency Response: 20Hz -- 20kHz
Signal/Noise Ratio: 88dB
Output impedance: 8ohm or 4ohm
Input impedance: 100Kohm
Distortion:

Vacuum Tube Amplifier BasicsVacuum Tube Amplifier Basics

It is true that accurately calculating electronic circuits can involve complicated formulas, but for the electronic hobbyist it is not necessary to perform at the level of an electrical engineer. With some basic knowledge it is possible for the hobbyist to design and build vacuum tube audio amplifiers that perform well. This book covers basic electronics related to vacuum tube amplifiers, an elementary reference guide for the novice working with vacuum tube amplifier circuits. Written in sections that are concise, many with examples and illustrations. Sections help you read at your own pace, convenient to stop after a section, skip around sections or refer back to a section. For the novice not versed in electronics, electronic principles are included along with several sections covering electronic and audio basics. Vacuum tube amplifying circuits are explained in simple terms without complicated math. Math is primarily basic math and a few simple formulas all solvable with a standard calculator and presented with examples. Principles of vacuum tube operation includes function of grids, effect of tube capacitance, tube resistance and heat dissipation. Power supply sections cover vacuum tube and solid state rectifier conversion of AC to DC and DC filtering. A sample power supply is used to explain calculating loads, determining required transformer ratings and component values. How to calculate a primary fuse value is also explained. Includes bias, bias supplies, calculating voltage gain and more. A table of component values for the popular 12AX7 in various operating parameters simplifies amplifier stage design. Includes project circuits with parts list and component layouts for a Buffer Line Amplifier with 25db gain, Triode Balanced-Unbalanced Input, Tone Control Stage, Turntable Pre-Amplifier, 6V6SE Stereo Amplifier, 6V6SE Monoblock Amplifier and a 30 Watt Monoblock Amplifier designed for tube rolling using various type output tubes. Also, included is a Guitar Amplifier project.


Tubes and CircuitsTubes and Circuits

The most up to date vacuum tube design book currently available. Packed with information...Loaded with projects...Nothing like it anywhere! Join Transcendent Sound’s Bruce Rozenblit as he takes you on a journey from the basics of tube circuitry, through advanced designs. Tubes and Circuits is a condensed engineering manual that teaches the theory and operation of vacuum tubes—as well as circuit design. In addition, five projects are included that you can build. Projects provide step-by-step design procedures, equations, schematics, parts lists, and photos to assist the hobbyist in construction. Build a state of the art, very low cost, 15W OTL (output transformerless) amplifier. Complete plans for a 300B OTL. Own most glorious 1 watt in all of audio. Pure single-ended, Class A sonic heaven. (See website for updates, www.transendentsound.com) A tube tester that tests virtually all current production audio and guitar amp tubes—can be user modified to test any tube; a simple device used for testing most octal based rectifier tubes and a tube analyzer used for manually determining tube constants and bias currents. Tubes and Circuits provides all design procedures and equations necessary to allow readers to create their own designs. Practical methods are revealed—all built upon a solid theoretical base. Bruce Rozenblit shares his decades of experience designing hi-end tube audio equipment. Nothing has been held back. Topics include the essential physics required to understand circuits. Explains in detail what electricity is and how it works. Shows how DC current flows and behaves through resistive elements. Detailed information on AC circuit theory, reactive elements, and how they affect signals. What inductance is and how it is created. How components are used to create networks and interact with each other— includes transformer theory. Shows how feedback works and how best to use it. Reveals in detail the chemical and physical processes of how vacuum tubes function, generate current, age, and deteriorate. Shows how the electric fields inside vacuum tubes cause them to work. Demonstrates what tube constants are and how to use them. Shows how to use tube characteristic charts to derive the tube constants used in design equations. Explains load lines and their application. Detailed operation and all design equations for virtually all of the tube circuits used in high-end audio. Includes single-ended and push-pull transformer coupled output stages. Basic information on power supply design and function. All of the theory is put to use and made practical in the project chapters. Learn how to design OTL amplifiers. Anyone that uses vacuum tubes, from the hobbyist, the musician, to the design professional, would benefit from Tubes and Circuits.



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