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Vacuum tube amplifier in China
China is the world’s leading hi-fi market,Volkswagen tube amplifiers producers have more than a dozen,The largest producer of vacuum tube amplifier is CAYIN, followed by the producers are YAQIN, MUZISHARE, Line Magnetic, SHUGUANG, MEIXINGMINGDA. And SHUGUANG which is also the largest producer of vacuum tubes. These brands in China Hot sales models(the low grade and mid-range of vacuum tube amplifiers)are:
CAYIN: MT-35MK2 MT-45MK2 A-88TMK2
SHUGUANG: SG-300B SG-845
MUZISHARE: X5 X7
YAQIN: MC-13S MC-10T MC-100B MS-110B
MEIXINGMINGDA: MC-7R MC300-A MC368-B
Line Magnetic: LM-211IA LM-218IA LM-219IA
As a senior buyers, I think the low grade and mid-range of the vacuum tube amplifier Best Buy brand is CAYIN and SHUGUANG, these are also the best quality and low-grade price.high-end vacuum tube amplifier Best Buy brand is CAYIN and Line Magnetic.
The main factors affect the sound quality of vacuum tube amplifier
1. Single-ended and push-pull circuit
At the end of the power amplification, amplification of push-pull is easier to get high power output, because push-pull is a vacuum tube amplifier «+» signal, a vacuum tube amplifier «-» signal, and then superimposed, so large distortion. Single-ended amplifier is a vacuum tube amplifier «+, -» signal, does not need the signal superposition, therefore less distortion. The sound Single-ended than push-pull good, especially in some minor details. However, Single-ended is difficult to obtain high power output, with vacuum tubes of the same type, Single-ended can do 10W, while push-pull is easy to do 30W, Single-ended to obtain large power will have to pay more price.
2. push-pull end power amplifier of vacuum tube different connections
push-pull the end of the power amplifying vacuum tube usually have three connections: triode form, super linear form and standard form. Theoretically speaking, the triode form by minimum distortion, output power is minimum; standard form get larger distortion, power is also the maximum; between super linear form between.
3. Affect the power transformer and output transformer of sound
High quality vacuum tube amplifier inseparable quality transformers, power transformers currently technically no trouble, the output transformer is the decision of the vacuum tube amplifier sound quality is the key. Because regardless of the output transformer selection is good, how sophisticated technology, both methods exist to avoid leakage inductance and stray capacitance components, resulting phase distortion. Output transformer as inductive element, to the transmission signals of different frequencies have different inductance. Therefore, the output of the transformer will be different in different voices lead. No high-quality output transformer, other aspects of the production of better quality vacuum tube amplifier is also meaningless.
Meixing mingda MC-211A Split type Mono or integrated vacuum tube amplifier 2A3 Push 211 Class A power amplifier 16W*1 110V/220V(pair)
Output power 16W*1
SNR ≥91dB (A weight)
Frequency response 18Hz~25KHz (±1dB)
Input sensitivity 0.4V (Pre) 0.9V(integrated)
Input jacks RCA×2group
Vacuum tube 211×1 2A3(can be 300B)×1 12AU7×1 12AX7×1
Input impedance 100kΩ(RCA)
Output impedance 4Ω 8Ω
Power supply 110V/220V
Power consumption 190W
Vacuum tube amps the use of attention:
1. Disable output short circuit and output load, before you start you must first connect speakers or headphones, the best is always keep them connected,
2. Start with minimal volume,
3. The supply voltage should be stable, with the use of conditional HiFi clean power for better protection and sound,
4. When the vacuum tube amplifier operating temperature is high, pay attention to ventilation, not to touch hot tube,
5. Do not put water on a hot vacuum tubes,
5. Do not put water on a hot vacuum tubes,
6. Boot and shutdown interval of 5 minutes,
7. Do not over 6 hours of continuous work,
8.6 ohm speaker connected to the 4 ohm, 8 ohm interfaces are available,
9. vacuum tube amplifier sound 40% depending on the power amplifier tube quality, 40% depends on the quality of output transformer, 10% depends on other electronic components quality, 10% depending on the manufacturing process,
10. power supply voltage can be free custom (please consult).
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|Frakt selskap||Frakt kostnader||Estimert leveringstid|
|3 - 7 dager|
|3 - 7 dager|
|5 - 14 dager|
|Frakt luft post||Gratis frakt||15 - 45 dager|
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