Monkeymatic Black Butte (univalve build)

[xtian]

Very cool and PTP rules. How is the ping thing? Did you try moving both the main filter grounds and the HV CT to a "star" via home runs? Those show "daisyed" too.

Got all noise solved, except for hum which is always part of SE amps I’ve built.

[Guy77]

Amps sounds great! All that great tone at a real bargain compared to building a push pull amp!

Cheers

Guy

[ChopSauce]

Faceplate arrived!

...

Yet another cute amp hand-monkeyed

I wish I knew how you solved your noise issues, but this is another story -

[JazzGuitarGimp]

I'm way late to the party, and I see you've got the ringing problem resolved. When you said disconnecting the NFB reduced the amplitude of the ringing, that was a red flag for me. I would have suggested swapping the OT primary wires....

[xtian]

I'm way late to the party, and I see you've got the ringing problem resolved. When you said disconnecting the NFB reduced the amplitude of the ringing, that was a red flag for me. I would have suggested swapping the OT primary wires....

There is no global NFB in this amp, only a local triode NFB, so, nothing having to do with the OT.