Very high quality, all tube, Fisher, mono power amp, push-pull (2
EL-84), output. The Fisher 30-A is a well-regarded and highly
desirable vintage mono tube amplifier from about 1960, that uses a
push-pull pair of EL84 / 6BQ5 tubes to produce about 14 watts. The amp
uses a single 12AX7 as an AF amp/phase inverter, and is tube-rectified
using a 6CA4 / EZ81.