DIY Dynaco ST-70 Tube Amp Rebuild

This ain't your father's Dynaco ST-70 amplifier. Mahogany case with toroidal power tranny.OPTs are original Dynaco 470s purchased via auction. Trannies "capped" with same wood. Features the tubes4hifi 12AU7 version of their driver board (and I woud never go back to the 12AT7 version now).
Re-issue GoldLion KT88s, Mullard 12AU7s. Fused with an IEC and on-off switch up front. Bias adjusting performed via Red Test Jacks perpendicular to holes cut for trimmers Ground/Common is Black test jack behind center driver tube. Tubes colored with LEDs.

Charlie Mooradian
USA