Sansui AU-555A Solid State Stereo Amplifier

Sansui AU-555A Solid State Stereo Amplifier

Description:
From design to performance, the AU-555A amplifier is built with precision engineering inspired by Sansui's renowned larger AU models. Highly favored by stereo enthusiasts globally, the AU-555A features upgraded dull black panels and exclusive triple tone controls for a refined and dynamic experience.

Specifications:
Power output: 25 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 30kHz
Total harmonic distortion: 0.5%
Damping factor: 50
Input sensitivity: 2mV (MM), 180mV (DIN), 180mV (line)
Signal to noise ratio: 70dB (MM), 80dB (line)
Channel separation: 45dB (MM), 50dB (line)
Output: 180mV (line), 30mV (DIN)
Speaker load impedance: 4Ω to 16Ω
Semiconductors: 23 x transistors, 2 x diodes
Dimensions: 395 x 127 x 278mm
Weight: 8kg

Description of Works:
Replaced all electrolytic capacitors.
Replaced polyester capacitors.
Replaced small signal transistors.
Inspect output transistors, replaced insulator and re-applied heat compound.
Dismantled, cleaned & deoxit all potentiometers and switches.
New speaker banana binding posts.
Cleaned & detailed unit.
Repaired wood veneer case, re-stained and sealed with satin polyurethane.
New 240vac power lead.

Warranty: 12 months

RV HIFI says:
This Sansui AU-555A Solid State Stereo Amplifier has undergone a meticulous restoration, utilizing top-of-the-line Nichicon and WIMA capacitors, as well as replacement of transistors and servicing of circuitry. Additionally, the speaker terminals have been upgraded for enhanced performance. The exquisite wood veneer case has been expertly repaired and coated with a sleek satin finish. Overall, it is in superb condition with only minimal signs of aging, earning a 9.5/10 appearance rating.