Pioneer A-9(1981-1982)
Item is in mint original working condition, no mods or repair to it b4, parting out at $600, pls contact 94698484 for a non obligation audition, tks

THE TRENDSETTER! NON-SWITCHING? amp using the VARI-BIAS? circuit and high-speed RET (ring emmiters) transistors that sported a high fT (frequency cutoff), lots of LEDs as well, lit graphs and diagrams, tiny push-buttons, a huge toroidal transformer and two rows of shark-fins heatsinks.

https://encrypted-tbn2.gstatic.com/i...cQ6r46x-SrrB2i