It has the appearance of a one-off DIY or perhaps a prototype build, rather than a commercial product. You may never find out unless someone else built something similar around the 1970s era too.
I can spot some date codes, 6535, 6440, 6604, and some transistors are Ge types. Probably very expensive when built, high quality components, but 55 years old now. Electrolytics will need replacing I would reckon. Likely a home-build by someone in the electronics industry of the time.
Surprisingly one channel still works. Going to recap and see if second comes alive.
East coast US? Very nice construction. Show some more photos, and the other side of the boards.
HP had a big division in Loveland in the 60s. Probably was made by one of their guys, sure looks like it.
HP employees did lots of their own personal special projects, using HP facilities at cost.
The company encouraged this. There was even a small production run (400 units) of this
particular special project (at a different division), complete with a manual in the HP style.
Last News
http://www.hparchive.com/Manuals/Barney_Oliver_Amplifier_Manual.pdf
The company encouraged this. There was even a small production run (400 units) of this
particular special project (at a different division), complete with a manual in the HP style.
Last News
http://www.hparchive.com/Manuals/Barney_Oliver_Amplifier_Manual.pdf
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