• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Tube pricing from 1981

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I stumbled across a Zenith MSRP list from 1981; close to the end of production I would think. It was interesting to me and I thought I'd share.

There are very few tubes that seem cheap, adjusted for thirty years of inflation. I didn't see any that I would have bought a case of then for sale today at a profit.

7591As for $13.60?
 

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It was popular for low voltage aikidos - broskie had a design specifically for them. There was another variant with a mosfet headphone output. I built one of each and they sound very good - the headphone one is one of the best headphone amps around.

Basically low voltage tube pre using standard easy to get transformers.

I see even the russian equivalent 6N27P has come down a lot in price.They were making 25-30$ each.


Fran
 
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