Vacuum Tube Amplifier
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Vacuum Tube Amplifier EBay Bargains!
Vacuum Tube Amplifier Amazon Deals!Nobsound NS-08E Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp
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 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*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.
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
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 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 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
•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
•TONE CONTROLS, ACTIVE CROSSOVERS AND OTHER CIRCUITS
•PRACTICAL LINE-LEVEL PREAMPLIFIER DESIGNS
•SINGLE-ENDED TRIODE OUTPUT STAGE
•PRACTICAL SINGLE-ENDED TRIODE AMPLIFIER DESIGNS
•PRACTICAL SINGLE-ENDED PSEUDO-TRIODE DESIGNS
•SINGLE-ENDED PENTODE AND ULTRALINEAR OUTPUT STAGES