MUZISHARE R90 Preamplifier Power Amplifier Vacuum tube Pre-amp MM/MC Balance Inp

All items guaranteed 100% BRAND NEW in the original edition Box.
ONE-YEAR WARRANTY !!!


Product Description:
Power transformer made of Z11 iron core with high-end special technology and special materials.
The main circuit of the front stage uses two 12AX7 vacuum tubes and four 6KE8 vacuum tubes.
The phono circuit uses two 6KE8 vacuum tubes plus RIAA circuit to realize MC/MM function
The high-voltage power supply uses a 17BE3 vacuum tube as tube rectification and a 12DT5 vacuum tube as a tube voltage stabilization circuit.
Fixed high and low frequency point enhancement selection function, with a direct selection switch.
Six groups of signal input (MC-H, MC-L, MM, CD, AUX, BALANCE)
This machine has specially added two groups of RCA output and one group of balanced output functions.
Power-on high-voltage delay and mute delay function (about 30 seconds).
Select Japanese ALPS high-end potentiometer.
Peripheral output level indicator function.
The sound is soft, pure and smooth, suitable for enjoying various types of music.


Main amplifier circuit specifications:
Gain: 16dB
Harmonic distortion: 1% (1kHz)
Frequency response: 15Hz~30kHz (-1.5dB)
Input sensitivity: 180mV
Input impedance: 100KΩ
Output impedance: 5KΩ
Signal-to-noise ratio: 95dB

PHONO specifications:
Gain: MM: 50dB; MC: 72dB
Harmonic distortion: 0.08% (1kHz)
Frequency response: RIAA bandwidth: 0.25dB 20Hz to 20KHz
Input sensitivity: MM: 6mV; MC: 0.5mV
Input impedance: MC: about 100Ω; MM: about 50KΩ
Signal-to-noise ratio: MC: 78dB; MM: 85dB
Left and right output balance: <0.5db
Power consumption: 65W
Net weight: 13kg
Vacuum tube used: 12AX7 x2; 6KE8 x6; 12DT5 x1; 17BE3 x1