This listing is for a Vintage 1950 Hoffman PPP 6K6 Mono Tube Amp, Ideal for converting to a Parallel Push Pull Harp or Guitar Amplifier or for restoring a Hoffman console.
It came from a Hoffman model 538 radio / record player and comprises the power & amplifier section of chassis # 168 (the tuner section will be listed separately). The schematic is in Rider's Volume 22, which covers 1951, but both the tuner section and the speaker have 1950 dates, so that's what we're going with.
The tube lineup is 4 x 6K6GT, in PPP, driven by a 6J5GT with a 5U4G rectifier.
Prior to listing it was brought up on a variac and played well. You will need to restore it prior to use and due to its age and the fact that older components can fail at any time it is sold as-is, as a restoration project, with no guarantee of operablility.
This is the only one on the market - don't let it get away!
It came from a Hoffman model 538 radio / record player and comprises the power & amplifier section of chassis # 168 (the tuner section will be listed separately). The schematic is in Rider's Volume 22, which covers 1951, but both the tuner section and the speaker have 1950 dates, so that's what we're going with.
The tube lineup is 4 x 6K6GT, in PPP, driven by a 6J5GT with a 5U4G rectifier.
Prior to listing it was brought up on a variac and played well. You will need to restore it prior to use and due to its age and the fact that older components can fail at any time it is sold as-is, as a restoration project, with no guarantee of operablility.
This is the only one on the market - don't let it get away!
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