Willsenton R-11PRE Tube Preamplifier Fully Balanced & With MC/MM Phono Amplifier

Willsenton R-11PRE product features:
1. Adopts a square power transformer specially developed for this machine
2. The machine circuit uses 4 6922 vacuum tubes
3. With phono input MC/MM switching function:
4. High voltage power supply uses 2 6Z4 vacuum tubes as tube rectification
5. Treble and bass adjustment function, with a direct selection switch
6. Five groups of signal input (PHONO, CD, AUX1, AUX2, BALANCE)
7. Infrared function remote control
8. Equipped with five-stage feedback amount adjustment, users can freely choose different feedback amounts to achieve diverse sound effects.
9. This machine has two sets of RCA output and one set of balanced output function,
10. Power-on delay function (about 30 seconds)
11. Select Japanese ALPS high-end potentiometer:

Product parameters
Model: R-11PRE
Gain: 18dB
Frequency response: 15Hz-35KHz (-3DB)
Harmonic distortion: 0.9% (1KHz, A weighted)
Signal-to-noise ratio: 93DB A weighted
Input sensitivity: 360mV
Input impedance RCA: 100KΩ
Input impedance balance: 47KΩ
Output impedance RCA: 5KΩ
Output impedance balance: 1KΩ
Used vacuum tube: 6922EHx4, 6z4x2
Net weight: 17
Volume of the whole machine (WxDxH): 431x 410x130 mm
Power supply voltage: 115V~230V+5%(50Hz)
Power consumption: 45w

PHONO specifications
Gain MM: 48dB
Gain MC: 72dB
Harmonic distortion: 0.06%, (1KHz, A-weighted)
RIAA bandwidth: ±0.5dB (20Hz-20KHz)
Input sensitivity MM: 6mV
Input sensitivity MC: 0.5mV
Input impedance MM: 47KΩ
Input impedance MC: 120Ω
Signal-to-noise ratio MM: 85dB A-weighted
Signal-to-noise ratio MC: 75dB A-weighted