Heathkit A-8A

Heathkit A-8A The Heathkit A-8A is a rare Heathkit integrated amplifier capable of around 15 watts per channel. It has three inputs — crystal phono (which can be used with line-level sources), mic, and magnetic phono. The tube complement is two 6SJ7 pentodes, a 6SN7 double triode, two 6L6 beam tetrodes, and a 5U4 full-wave rectifier. I bought this amplifier from a Craigslist seller who intended to restore it but never found the time. This example has a Chicago PCC105 power transformer and a Peerless S516A output transformer, but other A-8As may utilize different iron; the schematic and parts list […]