MUZISHARE X7 font b Integrated b font vacuum tube font b amplifier b font KT88x4 AB1
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MUZISHARE X7 font b Integrated b font vacuum tube font b amplifier b font KT88x4 AB1
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MUZISHARE X7 Integrated vacuum tube amplifier KT88x4 AB1 push-pull amplifier 25~45W TR~UL switch 110V/220V MM phono

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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.

MUZISHARE X7 KT88 Dual vacuum tube rectifier with prue Post-amp Best quality transformer Boot delay Infrared remote control Current Adjustment Best quality transformer

1. Handmade wire bonding,

2. Using high-quality output EI type transformers,

3. Specially designed high power Z11 core power transformers,

4. The voltage amplification and promote stage with 5AR4 rectifier power supply,

5. The preamp use 12AX7 and 12AU7 vacuum tube as voltage amplification and inverted push, Post-amp using vacuum tubes KT88 do class AB1 push-pull power amplifier, providing triode and ultra linear selection function: transistor works for viewing vocals, strings; superlinear work for scenes, large dynamic music,

6. Peripheral power tube current adjustment knob and the current display table,

7. With a Prue Post-amp features, which can be accessed independent of the former signal input,

8.With MM phono amplifier,

9. Infrared remote control function,

10. Turn the mute delay function (approximately 30 seconds),

11. With the starting buffer function (about 30 seconds),

12. Easy installation of plug-type vacuum tube shield.

X7 using

You can replace the vacuum tubes

12AX7

12AX7EH ECC83 E83CC CV4004 ECC803 5751

12AU7

12AU7EH ECC82 5814 6189 CV4003

KT88

KT88EH 6550EH 6550 6550A

5AR4

GZ34

Parameters

Rated output power: 25W+25W (RMS triode working condition)

45W+45W (RMS super-linear working condition)

THD: ≤1% (1kHz)

SNR: 92dB

Vacuum tube: 12AX7×1,12AU7×2, KT88×4,5AR4×1

Frequency response: 15Hz~30kHz (-1.5dB)

Input sensitivity: 280mV; 520mV (pre in)

Input impedance: 100KΩ

Output impedance: 4Ω 8Ω

Channel unbalance: ≤0.5dB

Power supply : 110V~ 220V ± 5% (50Hz) set before using

Working conditions: temperature: 0~40 Humidity: 20% ~ 80%

Storage conditions: Temperature: -20~70 Humidity: 20% ~ 90%

Power consumption: 260W

Volume (W×D×H): 410mm x 335mm x 198mm

N.W. 22.5kg

G.W. 25kg

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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Pris:  8714.00 kr / piece
fra AliExpress