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 8 Hours 33 Minutes 27 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 1 Days 14 Hours 18 Minutes 44 Seconds
Current price: $469.00 (4 bids)
Integrated KT88 Push-Pull Vacuum Tube Amplifier St
Integrated KT88 Push-Pull Vacuum Tube Amplifier St
Ends in 4 Days 8 Hours 34 Minutes 20 Seconds
Current price: $650.00 (0 bids)
Cayin MT-35MK2  EL34x4 class AB1 push-pull vacuum
Cayin MT-35MK2 EL34x4 class AB1 push-pull vacuum
Ends in 5 Days 2 Hours 24 Minutes 8 Seconds
Current price: $699.00 (0 bids)
6P14(EL84/6BQ5) Hi-Fi Single-ended Class A Vacuum
6P14(EL84/6BQ5) Hi-Fi Single-ended Class A Vacuum
Ends in 5 Days 8 Hours 35 Minutes 39 Seconds
Current price: $189.00 (0 bids)
Douk Audio Hi-End EL34 Vacuum Tube Amplifier HiFi
Douk Audio Hi-End EL34 Vacuum Tube Amplifier HiFi
Ends in 6 Days 1 Hours 46 Minutes 52 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 6 Days 2 Hours 38 Minutes 12 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 7 Days 2 Hours 44 Minutes 37 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 8 Days 2 Hours 44 Minutes 47 Seconds
Current price: $178.00 (1 bid)
Douk Audio Mini Single-ended 6P14&EL84 Vacuum Tube
Douk Audio Mini Single-ended 6P14&EL84 Vacuum Tube
Ends in 9 Days 6 Hours 10 Minutes 52 Seconds
Current price: $215.00 (9 bids)
Douk Audio Mini Desktop 6P31B Vacuum Tube Amplifie
Douk Audio Mini Desktop 6P31B Vacuum Tube Amplifie
Ends in 10 Days 6 Hours 49 Minutes 30 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 10 Days 6 Hours 49 Minutes 49 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 10 Days 7 Hours 10 Minutes 58 Seconds
Current price: $569.00 (0 bids)
Spark Cayin HA-1A Class A 12AX7 12AU7 Integrated H
Spark Cayin HA-1A Class A 12AX7 12AU7 Integrated H
Ends in 11 Days 2 Hours 56 Minutes 49 Seconds
Current price: $756.00 (0 bids)
Spark Cayin MT-12N vacuum Tube amplifier Integrate
Spark Cayin MT-12N vacuum Tube amplifier Integrate
Ends in 11 Days 3 Hours 14 Minutes 2 Seconds
Current price: $579.00 (0 bids)
YAQIN MC-5881A Integrated vacuum tube amplifier ul
YAQIN MC-5881A Integrated vacuum tube amplifier ul
Ends in 11 Days 9 Hours 8 Minutes 15 Seconds
Current price: $569.00 (0 bids)
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Ends in 12 Days 13 Hours 16 Minutes 12 Seconds
Current price: $235.00 (8 bids)
Douk Audio 6P3P Vacuum Tube Amplifier Single-ended
Douk Audio 6P3P Vacuum Tube Amplifier Single-ended
Ends in 16 Days 7 Hours 14 Minutes 42 Seconds
Current price: $146.00 (4 bids)
Douk Audio Class A 6J5 Vacuum Tube Amplifier 47 He
Douk Audio Class A 6J5 Vacuum Tube Amplifier 47 He
Ends in 17 Days 2 Hours 11 Minutes 58 Seconds
Current price: $45.00 (3 bids)
Douk Audio EL34 Vacuum Tube Amplifier Class A sing
Douk Audio EL34 Vacuum Tube Amplifier Class A sing
Ends in 17 Days 5 Hours 45 Minutes 4 Seconds
Current price: $246.00 (2 bids)
Douk Audio KT88 Vacuum Tube Amplifier HiFi Single-
Douk Audio KT88 Vacuum Tube Amplifier HiFi Single-
Ends in 17 Days 6 Hours 6 Minutes 22 Seconds
Current price: $339.00 (3 bids)
Hi-End 300B Vacuum Tube Amplifier Single-ended Pow
Hi-End 300B Vacuum Tube Amplifier Single-ended Pow
Ends in 17 Days 6 Hours 6 Minutes 40 Seconds
Current price: $850.00 (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 2 Hours 52 Minutes 22 Seconds
Current price: $420.00 (3 bids)
Class A Single-ended EL84 Vacuum Tube Amplifier He
Class A Single-ended EL84 Vacuum Tube Amplifier He
Ends in 18 Days 6 Hours 19 Minutes 19 Seconds
Current price: $659.00 (4 bids)
ShuguangSG-845 Vacuum Tube Amplifier 300B push 845
ShuguangSG-845 Vacuum Tube Amplifier 300B push 845
Ends in 18 Days 14 Hours 13 Minutes 4 Seconds
Current price: $1,550.00 (0 bids)
300B Vacuum Tube Amplifier Class A Single-Ended St
300B Vacuum Tube Amplifier Class A Single-Ended St
Ends in 19 Days 6 Hours 16 Minutes 58 Seconds
Current price: $850.00 (0 bids)
KT88 single-ended class A vacuum tube amplifier DI
KT88 single-ended class A vacuum tube amplifier DI
Ends in 19 Days 7 Hours 33 Minutes 19 Seconds
Current price: $359.00 (0 bids)
Audio Nirvana 300B Single Ended Triode Vacuum Tube
Audio Nirvana 300B Single Ended Triode Vacuum Tube
Ends in 19 Days 15 Hours 30 Minutes 56 Seconds
Current price: $1,595.00 (1 bid)
Nobsound Hybrid Headphone Amp Mini Stereo Vacuum T
Nobsound Hybrid Headphone Amp Mini Stereo Vacuum T
Ends in 21 Days 2 Hours 10 Minutes 29 Seconds
Current price: $46.00 (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 8 Hours 52 Minutes 15 Seconds
Current price: $149.00 (0 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 9 Hours 11 Minutes 8 Seconds
Current price: $230.00 (5 bids)
 Spark Cayin  A-88TMK2 KT88 Integrated vacuum tube
Spark Cayin A-88TMK2 KT88 Integrated vacuum tube
Ends in 24 Days 1 Hours 10 Minutes 50 Seconds
Current price: $1,760.00 (0 bids)
6N2+FU32 Vacuum Tube Amplifier/Headphone Amp Class
6N2+FU32 Vacuum Tube Amplifier/Headphone Amp Class
Ends in 26 Days 7 Hours 47 Minutes 40 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 26 Days 7 Hours 56 Minutes 11 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 27 Days 7 Hours 48 Minutes 23 Seconds
Current price: $139.00 (11 bids)
Douk Audio Stereo EL34 Vacuum Tube Amplifier HiFi
Douk Audio Stereo EL34 Vacuum Tube Amplifier HiFi
Ends in 27 Days 11 Hours 49 Minutes 25 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 28 Days 3 Hours 4 Minutes 15 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 28 Days 8 Hours 31 Minutes 4 Seconds
Current price: $165.00 (13 bids)
Solid State Vacuum Tube Amplifier Stereo HiFi Clas
Solid State Vacuum Tube Amplifier Stereo HiFi Clas
Ends in 28 Days 9 Hours 18 Minutes 6 Seconds
Current price: $115.00 (0 bids)
Class A Vacuum Tube Amplifier Stereo HiFi Integrat
Class A Vacuum Tube Amplifier Stereo HiFi Integrat
Ends in 29 Days 2 Hours 59 Minutes 27 Seconds
Current price: $99.99 (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:

Monoprice Tube Amp with Bluetooth 50-watt Stereo Hybrid and Line Output,Black - (116153)Monoprice Tube Amp with Bluetooth 50-watt Stereo Hybrid and Line Output,Black - (116153)

Enjoy the sound, style, and convenience of a hybrid tube amp with Bluetooth. This hybrid tube amp combines the warm, soothing sound of a tube preamp with the efficiency, power, and clarity of a 50 watts per channel solid state power amplifier. Stream your digital music to the amp using the built-in Bluetooth 4.0 radio with the superior sound of the Qualcomm aptX audio codec. Enhance your sound by connecting a subwoofer to the RCA preamp outputs. Not only does this amp sound great, it looks great, too! the Black panels, lighted VU meter, chrome accents, and the warm glow of the exposed tubes present a minimalist retro look, which will enhance any home or office environment with a hint of old school styling.


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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