Pioneer A-980 is high power super sound amplifier, and its matching tuner F-780
A-980 has super linear sound characteristic with low distortion at high power,
It can handle 90WPC with ease,hidden controllers are unique.working block diagram is also shown on the front.
F-780 Tuner is also has super linear characteristic and ultra low distortion thanks to IDMOS transistors,
 
This is 100V only
 
click here for amplifier technical details
click here for tuner technical details