• 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.

pete millet 807 amp

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sakellogg

sakellogg

Member
Joined 2008
Ok, so here i go into the realm of tubes. well kinda i built a preamp on a plywood board to get the feel for it.
But this one is big for me.

Ive decited on the 807 amp on petes site i have ordered components and boards.
i plan to start in a few months after i get a plan and do some more reading.

i plan on posting my progress here.

now, to all of the tube guys ive got a question.

from doing some reading it looks like the 6P7S will drop in nicely. from what i read it has a diffrent base than the 807. it looks like it uses a Octal base and a plate cap. and this coud be cool cause i can tweek the cir and change the tubes to 6l6 as i learn more.

so to you guys...... am i right? or is there other diffrences i missed?

thanks.
 
wicked1

wicked1

Member
Joined 2008
flickr.com/photos/whyarealltheidstaken/sets/72157624292377606/
Hi,
It looks like it will work. I built an amp based off his 807 design, and love it. While it was on the breadboard, I tried several types of output tubes w/ only minor component changes here and there (to get things biased correctly, or fix negative feedback issues). I didn't study the data sheet carefully, but it looks like those 6P7S's should drop in w/out a problem.
 
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