Vacuum Tube Amplifier

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Vacuum Tube Amplifier EBay Bargains!

Triode Japan Vintage Stereo Power Vacuum Tube Ampl
Triode Japan Vintage Stereo Power Vacuum Tube Ampl
Ends in 15 Hours 49 Minutes 39 Seconds
Current price: $1,690.00 (0 bids)
Douk Audio Mini Desktop 6P31B Vacuum Tube Amplifie
Douk Audio Mini Desktop 6P31B Vacuum Tube Amplifie
Ends in 19 Hours 7 Minutes 48 Seconds
Current price: $130.00 (0 bids)
Douk Audio Bluetooth KT88 Vacuum Tube Amplifier Si
Douk Audio Bluetooth KT88 Vacuum Tube Amplifier Si
Ends in 19 Hours 8 Minutes 7 Seconds
Current price: $488.00 (2 bids)
YAQIN MS-6V6 6P6P  push-pull Vacuum Tube Amplifier
YAQIN MS-6V6 6P6P push-pull Vacuum Tube Amplifier
Ends in 19 Hours 29 Minutes 16 Seconds
Current price: $569.00 (0 bids)
Audio Research Ref 75 SE Vacuum Tube Amplifier
Audio Research Ref 75 SE Vacuum Tube Amplifier
Ends in 1 Days 1 Hours 25 Minutes
Current price: $5,000.00 (1 bid)
Spark Cayin MT-12N vacuum Tube amplifier Integrate
Spark Cayin MT-12N vacuum Tube amplifier Integrate
Ends in 1 Days 15 Hours 32 Minutes 20 Seconds
Current price: $579.00 (0 bids)
Meixing Mingda MC368-B Vacuum Tube Amplifier KT88
Meixing Mingda MC368-B Vacuum Tube Amplifier KT88
Ends in 2 Days 3 Hours 20 Minutes 23 Seconds
Current price: $999.00 (1 bid)
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Ends in 3 Days 21 Hours 7 Minutes 1 Seconds
Current price: $286.00 (3 bids)
Vacuum Tube Amplifier HI-FI Integrated Amplifier
Vacuum Tube Amplifier HI-FI Integrated Amplifier
Ends in 4 Days 21 Hours 5 Minutes 10 Seconds
Current price: $523.93 (0 bids)
Douk Audio 6P3P Vacuum Tube Amplifier Single-ended
Douk Audio 6P3P Vacuum Tube Amplifier Single-ended
Ends in 6 Days 19 Hours 33 Minutes
Current price: $146.00 (2 bids)
Douk Audio KT88 Single-ended Class A Vacuum Tube A
Douk Audio KT88 Single-ended Class A Vacuum Tube A
Ends in 7 Days 17 Hours 53 Minutes 28 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 7 Days 18 Hours 3 Minutes 22 Seconds
Current price: $246.00 (1 bid)
Douk Audio 6P3P Vacuum Tube Amplifier Stereo HiFi
Douk Audio 6P3P Vacuum Tube Amplifier Stereo HiFi
Ends in 7 Days 18 Hours 23 Minutes 38 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 7 Days 18 Hours 24 Minutes 40 Seconds
Current price: $339.00 (2 bids)
Douk Audio Stereo EL34 Vacuum Tube Amplifier Hi-Fi
Douk Audio Stereo EL34 Vacuum Tube Amplifier Hi-Fi
Ends in 8 Days 15 Hours 10 Minutes 1 Seconds
Current price: $235.00 (1 bid)
Douk Audio 300B Vacuum Tube Amplifier HiFi 2.0 Cha
Douk Audio 300B Vacuum Tube Amplifier HiFi 2.0 Cha
Ends in 8 Days 15 Hours 10 Minutes 40 Seconds
Current price: $420.00 (3 bids)
Nobsound Hybrid Headphone Amp Mini Stereo Vacuum T
Nobsound Hybrid Headphone Amp Mini Stereo Vacuum T
Ends in 11 Days 14 Hours 28 Minutes 47 Seconds
Current price: $46.00 (1 bid)
Bluetooth 4.0 Hi-Fi Vacuum Tube Amplifier Stereo H
Bluetooth 4.0 Hi-Fi Vacuum Tube Amplifier Stereo H
Ends in 12 Days 21 Hours 10 Minutes 33 Seconds
Current price: $149.00 (0 bids)
Bluetooth 4.0 Hi-Fi Vacuum Tube Amplifier Stereo H
Bluetooth 4.0 Hi-Fi Vacuum Tube Amplifier Stereo H
Ends in 12 Days 21 Hours 10 Minutes 33 Seconds
Current price: $169.00 (1 bid)
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Ends in 12 Days 21 Hours 29 Minutes 26 Seconds
Current price: $230.00 (1 bid)
Bluetooth 4.0 High-power HiFi Vacuum Tube Amplifie
Bluetooth 4.0 High-power HiFi Vacuum Tube Amplifie
Ends in 13 Days 23 Minutes 9 Seconds
Current price: $218.08 (1 bid)
 Spark Cayin  A-88TMK2 KT88 Integrated vacuum tube
Spark Cayin A-88TMK2 KT88 Integrated vacuum tube
Ends in 14 Days 13 Hours 29 Minutes 8 Seconds
Current price: $1,760.00 (0 bids)
Melos TM 90ST II VACUUM TUBE AMPLIFIER
Melos TM 90ST II VACUUM TUBE AMPLIFIER
Ends in 15 Days 14 Hours 6 Minutes 21 Seconds
Current price: $950.00 (0 bids)
6N2+FU32 Vacuum Tube Amplifier/Headphone Amp Class
6N2+FU32 Vacuum Tube Amplifier/Headphone Amp Class
Ends in 16 Days 20 Hours 5 Minutes 58 Seconds
Current price: $189.00 (14 bids)
Douk Audio 6P3P Vacuum Tube Amplifier Stereo Hi-Fi
Douk Audio 6P3P Vacuum Tube Amplifier Stereo Hi-Fi
Ends in 16 Days 20 Hours 14 Minutes 29 Seconds
Current price: $185.00 (0 bids)
Douk Audio 6P14 Vacuum Tube Amplifier Single-Ended
Douk Audio 6P14 Vacuum Tube Amplifier Single-Ended
Ends in 17 Days 20 Hours 6 Minutes 41 Seconds
Current price: $139.00 (10 bids)
Douk Audio Stereo EL34 Vacuum Tube Amplifier HiFi
Douk Audio Stereo EL34 Vacuum Tube Amplifier HiFi
Ends in 18 Days 7 Minutes 43 Seconds
Current price: $199.00 (29 bids)
Douk Audio 2A3 Vacuum Tube Amplifier Stereo Hi-Fi
Douk Audio 2A3 Vacuum Tube Amplifier Stereo Hi-Fi
Ends in 18 Days 15 Hours 22 Minutes 33 Seconds
Current price: $399.00 (0 bids)
Bluetooth 4.0 HiFi Vacuum Tube Amplifier Stereo Cl
Bluetooth 4.0 HiFi Vacuum Tube Amplifier Stereo Cl
Ends in 18 Days 20 Hours 49 Minutes 22 Seconds
Current price: $165.00 (7 bids)
Class A Vacuum Tube Amplifier Stereo HiFi Integrat
Class A Vacuum Tube Amplifier Stereo HiFi Integrat
Ends in 19 Days 15 Hours 17 Minutes 45 Seconds
Current price: $99.99 (0 bids)
Class A Vacuum Tube Amplifier Stereo HiFi Integrat
Class A Vacuum Tube Amplifier Stereo HiFi Integrat
Ends in 19 Days 15 Hours 17 Minutes 45 Seconds
Current price: $120.00 (0 bids)
Douk Audio 6J1+6P1 Vacuum Tube Amplifier Single-en
Douk Audio 6J1+6P1 Vacuum Tube Amplifier Single-en
Ends in 20 Days 20 Hours 51 Minutes 45 Seconds
Current price: $110.00 (10 bids)
Douk Audio KT88 Vacuum Tube Amplifier High-End Sin
Douk Audio KT88 Vacuum Tube Amplifier High-End Sin
Ends in 22 Days 2 Hours 37 Minutes 2 Seconds
Current price: $469.00 (4 bids)
Douk Audio Hi-End EL34 Vacuum Tube Amplifier HiFi
Douk Audio Hi-End EL34 Vacuum Tube Amplifier HiFi
Ends in 26 Days 14 Hours 5 Minutes 10 Seconds
Current price: $249.00 (0 bids)
Douk Audio Bluetooth 4.0 EL34 Vacuum Tube Amplifie
Douk Audio Bluetooth 4.0 EL34 Vacuum Tube Amplifie
Ends in 26 Days 14 Hours 56 Minutes 30 Seconds
Current price: $289.00 (3 bids)
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Ends in 27 Days 15 Hours 2 Minutes 55 Seconds
Current price: $258.00 (11 bids)
6P14 / EL84 Vacuum Tube Amplifier Class A Single-e
6P14 / EL84 Vacuum Tube Amplifier Class A Single-e
Ends in 28 Days 15 Hours 3 Minutes 5 Seconds
Current price: $178.00 (1 bid)
Jolida JD-502CRC Integrated Vacuum Tube Amplifier
Jolida JD-502CRC Integrated Vacuum Tube Amplifier
Ends in 29 Days 2 Hours 27 Minutes 10 Seconds
Current price: $900.00 (0 bids)
Rockola Stereo Vacuum Tube Amplifier 404 408 Capri
Rockola Stereo Vacuum Tube Amplifier 404 408 Capri
Ends in 29 Days 4 Hours 59 Minutes 10 Seconds
Current price: $109.00 (0 bids)
Douk Audio Mini Single-ended 6P14&EL84 Vacuum Tube
Douk Audio Mini Single-ended 6P14&EL84 Vacuum Tube
Ends in 29 Days 18 Hours 29 Minutes 10 Seconds
Current price: $215.00 (8 bids)
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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:

Monoprice 113194 25 Watt AB Power Amplifier Stereo Hybrid Tube Amp with BluetoothMonoprice 113194 25 Watt AB Power Amplifier Stereo Hybrid Tube Amp with Bluetooth

As hybrid amps with both tube and solid-state amplifier stages, these amplifiers are the best of both worlds. The tube preamplifier section ensures that harmonics generated by overdriven signals are pleasant and musical, while also ensuring the output stage is never given a purely clipped, DC signal to amplify. This means that the solid-state power amplifier never gets overdriven and is less likely to clip the signal, thereby avoiding the harsh, unmusical non-octave harmonics and ensuring that a pure, speaker-killing DC signal is never produced. And because it cannot clip the tube, you do not need the higher power output levels of pure solid-state amps, which need the extra power headroom to handle musical peaks without clipping. Therefore a 25-watt tube or hybrid amp can sound just as loud or louder than a 50-watt solid-state amp. However, it is important to be aware of some of the disadvantages of a tube or hybrid design. These include the shorter lifespan and fragility of tubes versus transistors, the additional heat generated, and potential audible hum from the larger power transformer, though not audible through the speakers and only when no other sounds are present.

When you receive your new hybrid Tube Amp, you’ll want to take the following steps to ensure the best sound experience:

 

-          You’ll want to visually check the vacuum tubes before you operate your new amp.

-          If you notice a white discoloration on any of the vacuum tube, please contact our customer service team. We will trouble shoot and provide replacement vacuum tubes if needed.

-          You can remove your vacuum tubes from the amp by gently pulling straight so as to not damage the Tube pins or the tube socket.

-          When inserting a new Vacuum tube you’ll want to take note of the pin orientation and align the large gap on tube with tube socket and push in with a gentle wiggling motion. Please consult your user guide for more information on replacement of vacuum tubes




GemTune X-1 Class-A Tube Amplifier with 5Z4P*1, 6N9P*1, EL34-B*2GemTune X-1 Class-A Tube Amplifier with 5Z4P*1, 6N9P*1, EL34-B*2

GemTune X-1 Amplifier is a good choice if you're a tube amplifier fan. You can enjoy all kinds of music with the it, especially vocal music & chords.

Please download the user manual from: https://s3.amazonaws.com/Doctor-001/GemTune+Amp/Manual+for+Tube+Amplifier+X-1.pdf
Don't suggest to connect regular headphone jack to amp. Recommend to use Lineout jack.

Specifications:
Input Voltage: 110V
Tube: 5Z4P*1, 6N9P*1, EL34-B*2
Output Impedance: 0~4ohm~8ohm
Input Impedance: 100Kohm
Input Sensitivity: 500mv~2000mv
Distortion: 1% (1KHz)
Frequency Response: 20Hz~25KHz
Signal/Noise Ratio: 88dB
Output Power: 10W

Packages:
1 * GemTune Audio X-1 Tube Amplifier
【GUARANTEE】 We provide a 1 year warranty for the amplifier and 2 month warranty for the tubes. Our goal is to provide 100% customer satisfaction so you can buy with confidence!


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.


Audiophile Vacuum Tube Amplifiers - Design, Construction, Testing, Repairing & Upgrading, Volume 1Audiophile Vacuum Tube Amplifiers - Design, Construction, Testing, Repairing & Upgrading, Volume 1

The most complete and practical modern reference on audiophile vacuum tube technology! Destined to become a true classic in its field, this unique DIY design & construction manual presents the theory and practice of amplifier design & construction in a balanced way.

For those who dislike formulas and want proven, practical, ready-to-build designs, dozens of such commercial, tried & tested circuits are explained and analyzed. Just get your soldering iron ready and start building! Absolute beginners will benefit from the methodological approach, starting with DC circuits, then moving into AC voltages and currents and their circuits. The first few chapters of Volume 1 are a complete training course in fundamentals of electronics.

Although the focus is on audiophile or "hi-fi" vacuum tube amplifiers, those interested in tube guitar amps will also benefit from the wealth of material presented, most of which directly applies to tube guitar amps as well. Apart from various audio circuits, electronic components, power supplies and tests & measurements are also covered in depth. Even tube testing and tube testers are discussed at great length, as is troubleshooting, repairing and modifying (upgrading) tube gear. The advanced topics that other books don't even mention, such as audio transformer design, construction and testing, make this reference manual a valuable addition to your technical library.

For those familiar with solid state devices, such as bipolar transistors and FETs, an easy and seamless transition into tube technology is provided in the book, which adopts a unifying approach to amplification and rectification devices, be they of solid state or vacuum tube kind.

This practical DIY manual is richly and professionally illustrated with photographs of tubes, components and amplifiers, circuit diagrams, tube pinouts, curves and loadlines, graphs and charts. Hundreds of such valuable illustrations make it easy to comprehend issues. There is no need to search for, download and print such information, saving you valuable time. All the information required to design and build tube amplifiers is compiled in one place.

Who is this book for?

•Audiophiles and guitar players wanting to learn how tubes and tube amplifiers work.

•DIY constructors who wish to take their knowledge and building skills to a higher level.

•Buyers and sellers of tubes and tube equipment who need a better understanding of tube technology.

•Electronic technicians and engineers familiar with solid state devices and circuits, who want to expand their knowledge of tubes and their circuits.

•Anyone who wants to learn how to design, build, test, fix, or upgrade tube gear.

Contents of Volume 1:

•WHO WILL BENEFIT FROM THIS BOOK AND HOW

•BASIC ELECTRONIC CIRCUIT THEORY

•ELECTRONIC COMPONENTS

•AUDIO FREQUENCY AMPLIFIERS

•PHYSICAL FUNDAMENTALS OF VACUUM TUBE OPERATION

•VOLTAGE AMPLIFICATION WITH TRIODES - THE COMMON CATHODE STAGE

•OTHER VOLTAGE AMPLIFICATION STAGES WITH TRIODES

•TETRODES AND PENTODES AS VOLTAGE AMPLIFIERS

•FREQUENCY RESPONSE OF VACUUM TUBE AMPLIFIERS

•IMPEDANCE-COUPLED STAGES AND INTERSTAGE TRANSFORMERS

•NEGATIVE FEEDBACK

•TONE CONTROLS, ACTIVE CROSSOVERS AND OTHER CIRCUITS

•PRACTICAL LINE-LEVEL PREAMPLIFIER DESIGNS

•PHONO PREAMPLIFIERS

•SINGLE-ENDED TRIODE OUTPUT STAGE

•PRACTICAL SINGLE-ENDED TRIODE AMPLIFIER DESIGNS

•PRACTICAL SINGLE-ENDED PSEUDO-TRIODE DESIGNS

•SINGLE-ENDED PENTODE AND ULTRALINEAR OUTPUT STAGES





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