Stevem wrote:I also noticed that this amp as in 5 or 6 others I have worked on (AA165) does not have the resistor from pin 6 to pin 7 on that 3rd gain stage on the bass channel, has anyone ever seen this resistor in a amp or is it a change that never made it out the door on these amps?
Stevem, I believe you are getting the AA/AB circuits mixed up again. The AB165 that you referenced in this original thread does have the 470K feedback resistor between pins 6&7. On my BF AB165 it does, it's partially hidden under the dual 25/25 cap.
Whereas, the AA165 does not have the feedback at the 3rd stage between pins 6&7, my BF AA165 matches the layout and schematic.
TM