I have not come acrosss one of these before so thought I would share some pictures of this nicely made bass amp.
Judging by the selection of Hitachi output MosFETs these amps come from the 1980s/1990s I would estimate. Build quality is very high and no reason these amps won’t go on for ever. The only issues I faced on this one was of volume dips and the cause was just some of the jacks sockets suffering a little corrosion.
If you have one of these amps and want to get it restored don’t hesitate to get in touch to book it in.
I would love to see some schematic info on the Peterson amps. If anyone has any please let me know.