au-7500

Hello AKers, i just bought AU-7500 and not recap yet, because i want to hear how it is before recap. And after checking all transistor i think its still original. Some transistor is not like in schematic, but its looks old. While i test with speaker first day when i turn the power knob off, i...

A nice Sansui AU-7500 was on the workbench for a complete restoration and upgrade. The restoration/upgrade plan included the following: 1. Replace all power supply electrolytic capacitors with low ESR types (increasing capacity where appropriate). 2. Replace all of the signal path polarized...