Here we have a 1973 Pioneer SA 9100 its been sitting in a hot shed for 10 years+. Now after matching new part technology with old discontinued parts and maintaining the good original sound, can be tricky. But well worth it in the long run. I will post after finishing the rebuild and adjusting. It will be set for another couple decades. restoration of one of the finest Pioneer Integrated Amplifiers made. Analog all the way !