Vacuum Tube Amplifier

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Vacuum Tube Amplifier EBay Bargains!

JBL 5120 Vintage Vacuum Tube Amplifier Design simu
JBL 5120 Vintage Vacuum Tube Amplifier Design simu
Ends in 1 Days 4 Hours 42 Minutes 56 Seconds
Current price: $1,000.00 (0 bids)
Integrated KT88 Push-Pull Vacuum Tube Amplifier St
Integrated KT88 Push-Pull Vacuum Tube Amplifier St
Ends in 1 Days 11 Hours 44 Minutes 36 Seconds
Current price: $650.00 (0 bids)
Douk Audio 6SN7/6H8C Push 300B Vacuum Tube Amplifi
Douk Audio 6SN7/6H8C Push 300B Vacuum Tube Amplifi
Ends in 2 Days 9 Hours 15 Minutes 36 Seconds
Current price: $950.00 (0 bids)
Douk Audio Hi-End EL34 Vacuum Tube Amplifier HiFi
Douk Audio Hi-End EL34 Vacuum Tube Amplifier HiFi
Ends in 3 Days 4 Hours 57 Minutes 8 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 3 Days 5 Hours 48 Minutes 28 Seconds
Current price: $289.00 (3 bids)
Douk Audio FU32 Vacuum Tube Amplifier Stereo Singl
Douk Audio FU32 Vacuum Tube Amplifier Stereo Singl
Ends in 3 Days 8 Hours 51 Minutes 42 Seconds
Current price: $98.00 (1 bid)
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Ends in 4 Days 5 Hours 54 Minutes 53 Seconds
Current price: $245.10 (11 bids)
HCT Integrated Vacuum Tube Amplifier w/ Ipod Dock
HCT Integrated Vacuum Tube Amplifier w/ Ipod Dock
Ends in 4 Days 22 Hours 6 Minutes 23 Seconds
Current price: $99.00 (0 bids)
home audio amplifier bluetooth headphone Vacuum tu
home audio amplifier bluetooth headphone Vacuum tu
Ends in 5 Days 9 Hours 42 Minutes 46 Seconds
Current price: $159.00 (0 bids)
tube amplifier bluetooth amplifier 2.1 vacuum tube
tube amplifier bluetooth amplifier 2.1 vacuum tube
Ends in 5 Days 9 Hours 54 Minutes 22 Seconds
Current price: $155.00 (0 bids)
Mini Desktop Stereo Vacuum Tube Amplifier Amp HiFi
Mini Desktop Stereo Vacuum Tube Amplifier Amp HiFi
Ends in 6 Days 6 Hours 47 Minutes
Current price: $160.00 (14 bids)
Douk Audio Mini Single-ended 6P14&EL84 Vacuum Tube
Douk Audio Mini Single-ended 6P14&EL84 Vacuum Tube
Ends in 6 Days 9 Hours 21 Minutes 8 Seconds
Current price: $215.00 (12 bids)
Douk Audio Mini Desktop 6P31B Vacuum Tube Amplifie
Douk Audio Mini Desktop 6P31B Vacuum Tube Amplifie
Ends in 7 Days 9 Hours 59 Minutes 46 Seconds
Current price: $123.50 (0 bids)
HiFi 6H8C Push 6p1 Vacuum Tube Amplifier Single-En
HiFi 6H8C Push 6p1 Vacuum Tube Amplifier Single-En
Ends in 7 Days 19 Hours 36 Minutes 13 Seconds
Current price: $165.00 (3 bids)
Dynakit Stereo 70 Vacuum Tube Amplifier
Dynakit Stereo 70 Vacuum Tube Amplifier
Ends in 8 Days 1 Hours 57 Minutes 17 Seconds
Current price: $700.00 (0 bids)
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Ends in 9 Days 16 Hours 26 Minutes 28 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 10 Days 11 Hours 58 Minutes 59 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 13 Days 10 Hours 24 Minutes 58 Seconds
Current price: $138.70 (4 bids)
Douk Audio 6P14(EL84) Vacuum Tube Amplifier Single
Douk Audio 6P14(EL84) Vacuum Tube Amplifier Single
Ends in 14 Days 3 Hours 41 Minutes 28 Seconds
Current price: $139.99 (0 bids)
Douk Audio EL34 Vacuum Tube Amplifier Class A sing
Douk Audio EL34 Vacuum Tube Amplifier Class A sing
Ends in 14 Days 8 Hours 55 Minutes 20 Seconds
Current price: $246.00 (3 bids)
Douk Audio KT88 Vacuum Tube Amplifier HiFi Single-
Douk Audio KT88 Vacuum Tube Amplifier HiFi Single-
Ends in 14 Days 9 Hours 16 Minutes 38 Seconds
Current price: $339.00 (4 bids)
Nobsound Mini 6P3P Vacuum Tube Amplifier 2.0 Chann
Nobsound Mini 6P3P Vacuum Tube Amplifier 2.0 Chann
Ends in 14 Days 10 Hours 30 Minutes 5 Seconds
Current price: $199.99 (1 bid)
Douk Audio Mini 6P14(EL84) Vacuum Tube Amplifier P
Douk Audio Mini 6P14(EL84) Vacuum Tube Amplifier P
Ends in 15 Days 4 Hours 29 Minutes 26 Seconds
Current price: $199.99 (0 bids)
Douk Audio Stereo EL34 Vacuum Tube Amplifier Hi-Fi
Douk Audio Stereo EL34 Vacuum Tube Amplifier Hi-Fi
Ends in 15 Days 6 Hours 1 Minutes 59 Seconds
Current price: $235.00 (2 bids)
Douk Audio EL34 Vacuum Tube Amplifier HiFi Stereo
Douk Audio EL34 Vacuum Tube Amplifier HiFi Stereo
Ends in 15 Days 6 Hours 2 Minutes 49 Seconds
Current price: $220.00 (4 bids)
Douk Audio FU50 Vacuum Tube Amplifier HiFi Single-
Douk Audio FU50 Vacuum Tube Amplifier HiFi Single-
Ends in 16 Days 4 Hours 39 Minutes 13 Seconds
Current price: $229.00 (1 bid)
Vacuum Tube Amplifier Stereo Class-A 5Z4P1 6N9P1 E
Vacuum Tube Amplifier Stereo Class-A 5Z4P1 6N9P1 E
Ends in 16 Days 12 Hours 21 Minutes 32 Seconds
Current price: $389.95 (0 bids)
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Ends in 19 Days 12 Hours 21 Minutes 24 Seconds
Current price: $230.00 (5 bids)
Power supply for small vacuum tube amplifier / pre
Power supply for small vacuum tube amplifier / pre
Ends in 22 Days 9 Hours 56 Minutes 59 Seconds
Current price: $6.90 (0 bids)
Nobsound DX-925 Vacuum Tube Amplifier Bluetooth 4.
Nobsound DX-925 Vacuum Tube Amplifier Bluetooth 4.
Ends in 22 Days 12 Hours 14 Minutes 3 Seconds
Current price: $350.00 (1 bid)
2 x 80 W stereo vacuum tube amplifier chassis for
2 x 80 W stereo vacuum tube amplifier chassis for
Ends in 23 Days 4 Hours 59 Minutes 41 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 23 Days 10 Hours 57 Minutes 56 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 24 Days 10 Hours 58 Minutes 39 Seconds
Current price: $139.00 (13 bids)
Douk Audio Stereo EL34 Vacuum Tube Amplifier Singl
Douk Audio Stereo EL34 Vacuum Tube Amplifier Singl
Ends in 24 Days 11 Hours 35 Minutes 52 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 24 Days 14 Hours 59 Minutes 41 Seconds
Current price: $199.00 (30 bids)
Bluetooth 4.0 HiFi Vacuum Tube Amplifier Stereo Cl
Bluetooth 4.0 HiFi Vacuum Tube Amplifier Stereo Cl
Ends in 25 Days 11 Hours 41 Minutes 20 Seconds
Current price: $165.00 (17 bids)
Douk Audio 6J1+6P1 Vacuum Tube Amplifier Single-en
Douk Audio 6J1+6P1 Vacuum Tube Amplifier Single-en
Ends in 27 Days 11 Hours 43 Minutes 43 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 28 Days 17 Hours 29 Minutes
Current price: $469.00 (6 bids)
Douk Audio 6P14(EL84) Vacuum Tube Amplifier Stereo
Douk Audio 6P14(EL84) Vacuum Tube Amplifier Stereo
Ends in 29 Days 6 Hours 30 Minutes 59 Seconds
Current price: $139.00 (0 bids)
 Spark Cayin  A-88TMK2 KT88 Integrated vacuum tube
Spark Cayin A-88TMK2 KT88 Integrated vacuum tube
Ends in 29 Days 12 Hours 56 Minutes 41 Seconds
Current price: $1,760.00 (0 bids)
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Vacuum Tube Amplifier Amazon Deals!

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




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:

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 hobbyist 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 sections covering electronic and audio basics are included. Vacuum tube amplifying circuits are explained in simple terms without complicated math. Math is primarily basic math with 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 amplifier design is used to explain calculating voltage gain and component values. 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.


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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