YAMAHA's legendary masterpiece! Serviced and in excellent condition! Pre-main amplifier A-7a

This is a legendary Yamaha amplifier, the A-7a, in excellent condition and fully serviced!

The exterior is in pristine condition with no scratches and a beautiful shine.
All outputs have been tested and confirmed to be working.
The sound is balanced between left and right channels, with no distortion and the characteristic powerful, crisp Yamaha sound.

The audio specialist maintenance included polishing the front panel, replacing faulty capacitors, cleaning the contacts of the volume and switch components with alcohol, etc.
The main direct function is fixed to ON due to component deterioration.
This amplifier is in excellent condition, so please don't miss out!

Specifications:
Type: Integrated Amplifier
Output Power (20Hz-20kHz, 0.01%): 120W + 120W
Power Bandwidth: 10Hz-50kHz
Damping Factor: 65
Input Sensitivity/Impedance:
Phono MM: 2.5mV/47kΩ
Phono MC: 250μV/100Ω
Tuner: 150mV/47kΩ
Maximum Allowable Input (Distortion 0.01%):
MM: 180mV
MC: 18mV
Output Voltage/Impedance:
Rec Out: 150mV/550Ω
Frequency Response:
Tuner→SP Out: DC-100kHz +0 -2dB
RIAA Deviation: 20Hz-20kHz ±0.2dB
Total Harmonic Distortion (20Hz-20kHz):
MM→Rec Out (5V): 0.003%
MC→Rec Out (5V): 0.006%
Tuner→SP Out (50W): 0.005%
Intermodulation Distortion: Tuner→SP Out: 0.002%
Signal-to-Noise Ratio:
Phono MM: 86dB
Phono MC: 70dB
Tuner: 103dB
Input-Referred Noise:
Phono MM: -138dBV
Phono MC: -147dBV
Residual Noise: 183μV
Channel Separation:
MM→SP Out: 70dB
Tone Control:
Bass: ±10dB (20Hz)
Treble: ±10dB (20kHz)
Filter: 12dB/oct, 10kHz
Power Supply: AC100V, 50Hz/60Hz
Power Consumption: 165W AC
Outlet Power Switch Interlock: 2 systems
Power Switch Non-Interlock: 1 system
Dimensions: Width 435 x Height 132 x Depth 365mm
Weight: 10.6kg

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OA-896