Wow!!!
Nice proyect!!

I'd put a 1K resistor (grid stopper) in grid1 of the pentode section, soldered just in the socket, to avoid noises.

Here's mine. It's just a RM with CB nagaviper tone control and Si/Ge selector .
Regards!!!

I'm not a fuzz pedals lover, but this one!! And I really enjoy the demos!!

Put it first in the chain, just after the guitar. The cause of the problem are the buffers cointained in the tuner, wah and the wahmmy.
Best regards!!

Worst case: just let the heaters unisolated...

I think, the best U can do is replace the 50C5 and isolate correctly the circuit, with an power transformer and a few diodes... It's not that difficult... Just look for the correct grounding. And the re-cap: I'd just cahnge the electros

50L6, 7695, UL41, UL84, and the list continues... U just have to look for th nuber "50" or the letter "U" in the front of the name of the tubes .

Wich one is D4?

...jelly, man!!
I suggest to turn the effect on and just put the diode leads over th four ones in parallel and just use the ears. It's not rocket science...

That 3M3 resistor is the grid stopper resistor. And the noise, I guess it's just an oscilation.
I suggest to take a look at this read: http://www.valvewizard.co.uk/gridstopper.html
And move all the grid stoppers to the tubes sockets .
Best regards!!

Hi guys .... well am trying to source out the parts under the BOM given by Darkrain... well would like to know the power ratings for the resistors for this build? how about the capacitors voltage ratings? kindly enlighten me please as this would be my first pedal build... Be specially carrefull wit...

It's not true bypass, but U can mod it easly

... Is this even a Booster? I think its more of a pre amp. I have only used it on tube amps so i can't say what it would do on a solid state rig. Just a tought: it's a perfect candidate for DC70 or any subminiature tube, powered by nixie supply :idea: . It could become into a regular sized pedal ea...

U can try it with 6AV6, 6C4, etc... Singles hi-mu triodes .
Or a pentode, as EF86, EF144, etc... in triode mode; a thing that I've never seen is a triode in pentode mode, reaaally nice idea

Hi, sinner!! I've just seen this :popcorn: Look, I'm not a really supporter of 2, 3, 4... channels in a tube amp; 'cause it means more tubes ($$, time to assembly, heaters and workin' current and high voltages, debuggin', and a lot of etc...). With those 2 power, a phase splitter and 2 preamp tubes,...

Yes, there's a noise on tremolo mode. I gues it's 'cause the whires are too long... well, I had no choice with that: it was made for a friend of mine, and he wanted it in a little box
I hadn't problems with volume drop That's a fet problem, I guess...

What if U add a 12ax7 with its tonestack, in a new channel. I guess 200mA is no difference for the PT...
Well.. my 2 cents

an inductor 5A is too much? I think thath kind of inductor is something DIY-able, 2mm copper an 30-40 turns arround a ferrite bar... Anyway, U can measure it, try again if it goes wrong, etc... What U say, fellows...? BTW: Is there someone who knows how to do it? (before I just make it and burn a c...

And the last code, as the data says: http://users.ece.utexas.edu/~valvano/Datasheets/TLC2272.pdf "For precision applications, the TLC227xA family is available and has a maximum input offset voltage of 950 µV. This family is fully characterized at 5 V and ±5 V." Maybe U can find some tlc22x...

I've a cub12r just here. Power tubes are EL84, and that's all that change. It's aaaaaall SMD components but anode resistors. It is a cub of problems, I'm starting to hate it... But, as U said, Paul, it's very cheap and U have tubes, transformers, sockets, case, chasis, speaker... I think it's a grea...

Weeell, here's mine. Dont'n ask for better gutshots, there's no possibility that I disable it again: it's a veeery small enclosure. https://i1114.photobucket.com/albums/k540/iq01221/th_SAM_2256.jpg https://i1114.photobucket.com/albums/k540/iq01221/th_SAM_2261.jpg https://i1114.photobucket.com/albums...