1970 Ampeg AC-12! Let's repair a rare Ampeg & circuit description.

The Ampeg AC-12 is a rare amp, and rare amps make their way on to not-so-rare recordings. As music was changing in the early 70s, amp manufacturers were still holding onto the past. This AC-12 was made for accordion use while the sister amp, the GU-12, was being used by the Rolling Stones on Exile on Main Street.