Vacuum Tube Amplifier

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Vacuum Tube Amplifier EBay Bargains!

Raphaelite 300B Vacuum Tube Amplifier HiFi Single-
Raphaelite 300B Vacuum Tube Amplifier HiFi Single-
Ends in 1 Days 10 Hours 29 Minutes 41 Seconds
Current price: $740.00 (1 bid)
Douk Audio 6J1+6P1 Vacuum Tube Amplifier Single-en
Douk Audio 6J1+6P1 Vacuum Tube Amplifier Single-en
Ends in 1 Days 10 Hours 54 Minutes 7 Seconds
Current price: $110.00 (10 bids)
Cayin MT-35MK2  EL34x4 class AB1 push-pull vacuum
Cayin MT-35MK2 EL34x4 class AB1 push-pull vacuum
Ends in 2 Days 4 Hours 32 Minutes 4 Seconds
Current price: $699.00 (0 bids)
KT88-98 Class A Single-ended HIFI Power Stereo Aud
KT88-98 Class A Single-ended HIFI Power Stereo Aud
Ends in 2 Days 16 Hours 39 Minutes 24 Seconds
Current price: $445.55 (4 bids)
6N8P push 6P3P tube amp single-ended Class A 7.5w
6N8P push 6P3P tube amp single-ended Class A 7.5w
Ends in 4 Days 2 Hours 13 Minutes 54 Seconds
Current price: $190.00 (2 bids)
6P14(EL84/6BQ5) Hi-Fi Single-ended Class A Vacuum
6P14(EL84/6BQ5) Hi-Fi Single-ended Class A Vacuum
Ends in 6 Days 10 Hours 56 Minutes 19 Seconds
Current price: $189.00 (0 bids)
XiangSheng FU50 Sweet Peach Single-Ended Vacuum Tu
XiangSheng FU50 Sweet Peach Single-Ended Vacuum Tu
Ends in 6 Days 23 Hours 39 Minutes 44 Seconds
Current price: $340.00 (0 bids)
Douk Audio Hi-End EL34 Vacuum Tube Amplifier HiFi
Douk Audio Hi-End EL34 Vacuum Tube Amplifier HiFi
Ends in 7 Days 4 Hours 7 Minutes 32 Seconds
Current price: $236.55 (0 bids)
Douk Audio Bluetooth 4.0 EL34 Vacuum Tube Amplifie
Douk Audio Bluetooth 4.0 EL34 Vacuum Tube Amplifie
Ends in 7 Days 4 Hours 58 Minutes 52 Seconds
Current price: $274.55 (2 bids)
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Ends in 8 Days 5 Hours 5 Minutes 17 Seconds
Current price: $258.00 (10 bids)
Original Dared MP-5BT HiFi Valve Vacuum Tube Ampli
Original Dared MP-5BT HiFi Valve Vacuum Tube Ampli
Ends in 8 Days 13 Hours 34 Minutes 32 Seconds
Current price: $400.00 (2 bids)
AES Super Amp mkII -Audio Electronic Supply- Cary
AES Super Amp mkII -Audio Electronic Supply- Cary
Ends in 9 Days 53 Minutes 43 Seconds
Current price: $1,295.00 (0 bids)
6P14 / EL84 Vacuum Tube Amplifier Class A Single-e
6P14 / EL84 Vacuum Tube Amplifier Class A Single-e
Ends in 9 Days 5 Hours 5 Minutes 27 Seconds
Current price: $178.00 (1 bid)
YAQIN SD-35A 6N8P Vacuum Tube Amplifier Hi-End HDC
YAQIN SD-35A 6N8P Vacuum Tube Amplifier Hi-End HDC
Ends in 10 Days 5 Hours 3 Minutes 55 Seconds
Current price: $659.99 (0 bids)
Douk Audio Mini Single-ended 6P14&EL84 Vacuum Tube
Douk Audio Mini Single-ended 6P14&EL84 Vacuum Tube
Ends in 10 Days 8 Hours 31 Minutes 32 Seconds
Current price: $204.25 (5 bids)
ShuguangSG-845 Vacuum Tube Amplifier 300B push 845
ShuguangSG-845 Vacuum Tube Amplifier 300B push 845
Ends in 11 Days 10 Hours 9 Minutes 1 Seconds
Current price: $1,550.00 (0 bids)
 Spark Cayin  A-88TMK2 KT88 Integrated vacuum tube
Spark Cayin A-88TMK2 KT88 Integrated vacuum tube
Ends in 12 Days 9 Hours 30 Minutes 38 Seconds
Current price: $1,860.00 (0 bids)
YAQIN MC-5881A Integrated vacuum tube amplifier ul
YAQIN MC-5881A Integrated vacuum tube amplifier ul
Ends in 12 Days 11 Hours 28 Minutes 55 Seconds
Current price: $569.00 (0 bids)
Meixing Mingda MC368-B Vacuum Tube Amplifier KT88
Meixing Mingda MC368-B Vacuum Tube Amplifier KT88
Ends in 12 Days 17 Hours 22 Minutes 45 Seconds
Current price: $999.00 (1 bid)
Brand New APPJ Mini 2015 PA1501A HIFI Vacuum Tube
Brand New APPJ Mini 2015 PA1501A HIFI Vacuum Tube
Ends in 13 Days 5 Hours 3 Minutes 23 Seconds
Current price: $189.00 (1 bid)
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Douk Audio EL34 Vacuum Tube Amplifier Single-ended
Ends in 13 Days 15 Hours 36 Minutes 52 Seconds
Current price: $223.25 (6 bids)
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Ends in 14 Days 11 Hours 9 Minutes 23 Seconds
Current price: $271.70 (3 bids)
Ayon Odin 2 Triode Parallel Single-Ended AA62B Vac
Ayon Odin 2 Triode Parallel Single-Ended AA62B Vac
Ends in 15 Days 15 Hours 17 Minutes 18 Seconds
Current price: $5,499.99 (0 bids)
Douk Audio 6P3P Vacuum Tube Amplifier Single-ended
Douk Audio 6P3P Vacuum Tube Amplifier Single-ended
Ends in 17 Days 9 Hours 35 Minutes 22 Seconds
Current price: $146.00 (0 bids)
Vacuum tube amplifier Assembling Kit Gakken
Vacuum tube amplifier Assembling Kit Gakken
Ends in 17 Days 9 Hours 50 Minutes 55 Seconds
Current price: $233.66 (0 bids)
Douk Audio KT88 Single-ended Class A Vacuum Tube A
Douk Audio KT88 Single-ended Class A Vacuum Tube A
Ends in 18 Days 7 Hours 55 Minutes 50 Seconds
Current price: $284.05 (1 bid)
Douk Audio EL34 Vacuum Tube Amplifier Class A sing
Douk Audio EL34 Vacuum Tube Amplifier Class A sing
Ends in 18 Days 8 Hours 5 Minutes 44 Seconds
Current price: $233.70 (0 bids)
KT120/KT150 vacuum tube amplifier single-ended Cla
KT120/KT150 vacuum tube amplifier single-ended Cla
Ends in 18 Days 11 Hours 18 Minutes 24 Seconds
Current price: $1,865.00 (0 bids)
Douk Audio 300B Vacuum Tube Amplifier HiFi 2.0 Cha
Douk Audio 300B Vacuum Tube Amplifier HiFi 2.0 Cha
Ends in 19 Days 5 Hours 13 Minutes 2 Seconds
Current price: $420.00 (1 bid)
Nobsound Hybrid Headphone Amp Mini Stereo Vacuum T
Nobsound Hybrid Headphone Amp Mini Stereo Vacuum T
Ends in 19 Days 5 Hours 54 Minutes 59 Seconds
Current price: $49.40 (0 bids)
Golden Tube Audio SE-40 Vacuum Tube Amplifier and
Golden Tube Audio SE-40 Vacuum Tube Amplifier and
Ends in 22 Days 4 Hours 43 Minutes 6 Seconds
Current price: $2,200.00 (0 bids)
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Douk Audio EL34 Vacuum Tube Amplifier HiFi 2.0 Cha
Ends in 23 Days 11 Hours 31 Minutes 48 Seconds
Current price: $218.50 (0 bids)
Rockola Stereo Vacuum Tube Amplifier Rhapsody 3685
Rockola Stereo Vacuum Tube Amplifier Rhapsody 3685
Ends in 25 Days 20 Hours 19 Minutes 19 Seconds
Current price: $119.00 (0 bids)
Rockola Stereo Vacuum Tube Amplifier 41056-1-A Amp
Rockola Stereo Vacuum Tube Amplifier 41056-1-A Amp
Ends in 25 Days 20 Hours 19 Minutes 47 Seconds
Current price: $149.00 (0 bids)
VINTAGE SILVERTONE VACUUM TUBE AMPLIFIER
VINTAGE SILVERTONE VACUUM TUBE AMPLIFIER
Ends in 26 Days 13 Hours 54 Minutes 6 Seconds
Current price: $70.00 (0 bids)
Douk Audio 6P3P Vacuum Tube Amplifier Stereo Hi-Fi
Douk Audio 6P3P Vacuum Tube Amplifier Stereo Hi-Fi
Ends in 27 Days 10 Hours 16 Minutes 51 Seconds
Current price: $175.75 (0 bids)
Enjoy a full-fledged sound vacuum tube amplifier W
Enjoy a full-fledged sound vacuum tube amplifier W
Ends in 27 Days 11 Hours 17 Minutes 35 Seconds
Current price: $337.00 (0 bids)
Single Ended Vacuum Tube Amplifier Headphone Amp 8
Single Ended Vacuum Tube Amplifier Headphone Amp 8
Ends in 28 Days 4 Hours 5 Minutes 42 Seconds
Current price: $399.99 (0 bids)
Douk Audio 2A3 Vacuum Tube Amplifier Stereo Hi-Fi
Douk Audio 2A3 Vacuum Tube Amplifier Stereo Hi-Fi
Ends in 29 Days 5 Hours 24 Minutes 55 Seconds
Current price: $379.05 (0 bids)
Bluetooth 4.0 HiFi Vacuum Tube Amplifier Stereo Cl
Bluetooth 4.0 HiFi Vacuum Tube Amplifier Stereo Cl
Ends in 29 Days 10 Hours 51 Minutes 44 Seconds
Current price: $226.10 (4 bids)
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Vacuum Tube Amplifier Amazon Deals!

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




Audiophile Vacuum Tube Amplifiers - Design, Construction, Testing, Repairing & Upgrading, Volume 2Audiophile Vacuum Tube Amplifiers - Design, Construction, Testing, Repairing & Upgrading, Volume 2

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 2:

•PRACTICAL SINGLE-ENDED PENTODE AND ULTRALINEAR DESIGNS

•PUSH-PULL OUTPUT STAGES

•PRACTICAL PUSH-PULL AMPLIFIER DESIGNS

•BALANCED, BRIDGE AND OTL (OUTPUT TRANSFORMERLESS) AMPLIFIERS

•THE DESIGN PROCESS

•FUNDAMENTALS OF MAGNETIC CIRCUITS AND TRANSFORMERS

•MAINS TRANSFORMERS AND FILTERING CHOKES

• POWER SUPPLIES FOR TUBE AMPLIFIERS

•AUDIO TRANSFORMERS

•TROUBLESHOOTING AND REPAIRING TUBE AMPLIFIERS

•UPGRADING & IMPROVING TUBE AMPLIFIERS

•SOUND CONSTRUCTION PRACTICES

•AUDIO TESTS & MEASUREMENTS

•TESTING & MATCHING 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: 8W

Packages:
1 * GemTune Audio X-1 Tube Amplifier



GemTune GS01 Hi-Fi Tube Amplifier with Tubes: EL34,6N9P,5AR4GemTune GS01 Hi-Fi Tube Amplifier with Tubes: EL34,6N9P,5AR4

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:


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