• 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.

Newbie - Is this a good amp?

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Mas Penk

Member
Joined 2003
I wanna make bigger amp (20-50 watt) and this amp from Vacuum State :

http://www.vacuumstate.com/images/PP-1C.gif

http://www.vacuumstate.com/images/PP-1C_ps.gif

Does any have built this amp? Can replace El34 with SV6550C?
or may be suggestion about building another good sounding PP amp specially using 6550...

I wanna build this because it has no feedback (which alot of people say it has a bad effect) and it uses plate load on driver....

Help me please...
 
Frank Berry

Frank Berry

Member
Joined 2003
I have not had good luck with the SV6550C tubes due to premature tube failure. For that reason, I have converted my power amplifier to Sovtek KT88 tubes. I couldn't be happier.

Inverse feedback in push-pull amplifiers is almost always necessary to reduce crossover (notch) distortion and to reduce the output impedance of the amplifier.
 
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