Pioneer SA-9100 Stereo Integrated Amplifier, Complete Pro Rebuild, Superb Sound!

Description

Professionally rebuilt Pioneer SA-9100 stereo integrated amplifier. Completely refurbished and reliably functioning to or exceeding original spec. Please read the full shop notes below for details: This example of an early 1970s hi-fi classic is the closest thing to new condition as you're likely to find. Beautiful sound, classic presentation with only minor cosmetic wear accumulated over the decades.
Ships worldwide via eBay's Global Shipping Program, or local pickup can be arranged. The package will be large, delicate, and insured for full value, so shipping may be a significant expense.
Notes from the technician -
Power supply board burned, cracked
Fabricate custom volume control, install
Replace blown output transformers
Rebuild power supply board
Replace transistors, caps (21), diodes (2), resistor (1)
Clean all controls and switches
Amp boards unstable
Replaced variable resistors (4), amp caps (8), transistors (26), Diodes (2)
Set bias and offset to Factory spec
Distortion 0.02% @65 Watts / Channel
Phono distortion 1.5%
From the owner's manual -
Pioneer SA-9100 Stereo Integrated Amplifier (1973-75)
Description:
The SA-9100 is Pioneer's finest professional stereo integrated amplifier.
It features an all stage direct coupled pure complementary OCL circuit, resulting in a super wide bandwidth and distortion free power, a unique 3 stage direct coupled equaliser, twin stepped tone controls for making critical bass and treble adjustments and level set volume and loudness contour controls to adjust listening preference.
Other features include 2-way tape duplicating and monitoring, 2 position high and low filters and 3 pairs of speaker output terminals.
Specifications:
Power output: 60 watts per channel into 8Ω (stereo)
Frequency response: 10Hz to 70kHz
Total harmonic distortion: 0.1%
Damping factor: 70
Input sensitivity: 2mV (mic), 2.5mV (MM), 150mV (line)
Signal to noise ratio: 70dB (mic), 80dB (MM), 90dB (line)
Output: 150mV (line), 30mV (DIN), 2V (Pre out)
Speaker load impedance: 4Ω to 16Ω
Semiconductors: 63 x transistors, 30 x diodes