Greetings Audio enthusiasts. I began my interest in electronics with antique radios. But with so little of interest to listen to on a.m. radio, I shifted my focus to tube hi-fi equipment. Nothing too exotic; mostly 6V6 and 6L6 amplifiers. For example, I just purchased a Newcomb model A-15 amplifier needing minor refurbishing. However, while at an auction yesterday, I went out of my comfort zone and bought a pair of Dukane model 1A435B mono-blocks. I found references on the Audio Circle site to at least one other audio enthusiast, in 2013, needing a circuit diagram for these amps. I hope I might be as lucky in securing such a diagram.