Sell Me Some Transistors for a Tone Vendor?

[yazooligan]

1x OC75
2x 2C381 or 2SC381

Just want to wrap this one up. It’s been sitting on my bench otherwise populated for months. I’m in Nashville. Thanks.

 

[peccary]

I wouldn't worry about finding the exact transistors but rather hitting the right gain and leakage numbers. Places like Pedal Hacker have a good selection and are a trusted seller and probably your best bet if looking to buy individual transistors. I'm not sure if the Small Bear store is still open but they would be a good resource as well.

 

[Coda]

Which Tone Bender?…

 

[yazooligan]

I inferred MK I from the transistor request.

Correct.

 

[yazooligan]

I wouldn't worry about finding the exact transistors but rather hitting the right gain and leakage numbers. Places like Pedal Hacker have a good selection and are a trusted seller and probably your best bet if looking to buy individual transistors. I'm not sure if the Small Bear store is still open but they would be a good resource as well.

Am I looking for equivalents at Pedalhacker? I don’t see either of the ones from the build doc on their site. Smallbear is still open for now but I think they’re sold out of the ones on the build doc.

 

[Coda]

Am I looking for equivalents at Pedalhacker? I don’t see either of the ones from the build doc on their site. Smallbear is still open for now but I think they’re sold out of the ones on the build doc.

You won’t get MKI from Pedal Hacked. His Ge stock currently is low leakage Russian.

 

[peccary]

You won’t get MKI from Pedal Hacked. His Ge stock currently is low leakage Russian.

Thanks for the clarification. I just know they tend to have more GE in stock than other reputable places. Small Bear is really drying up the place, it seems.

 

[JamieJ]

I bought a collection of >200 old transistors from eBay and picked through them to find the correct spec’d gain and leakage for my tone bender build. It’s a bit of a pain but it’s a very picky circuit. I played it a bit tonight and it sounds immense so it’s definitely worth the effort!

 

[yazooligan]

Fuck…what a bummer. Probably would have skipped that PCB if I’d known.

 

[Coda]

Fuck…what a bummer. Probably would have skipped that PCB if I’d known.

You can get it to work, but it’s a bit more effort. Leakey Ge isn’t really usable…except in certain circumstances. It just takes a bit of searching.

 

[fig]

It can be worked the other way 'round.

https://forum.pedalpcb.com/threads/ge-transistors.7474/post-89798

Tone Vendor MKI HFE

Where can I buy the 2SC381 ?? Wich HFE I must use in Q1, Q2 and Q3?? Could I use three OC75 instead 2SC381 ? Thank you all, is my first fuzz

forum.pedalpcb.com

 

[yazooligan]

I just got three MP-40A’s from eBay and the seller says they’re matched, so I’m gonna try to put all three in the Vendor and see what happens.

 

[yazooligan]

I just got three MP-40A’s from eBay and the seller says they’re matched, so I’m gonna try to put all three in the Vendor and see what happens.

It worked!

 

[beat]

I bought a collection of >200 old transistors from eBay and picked through them to find the correct spec’d gain and leakage for my tone bender build. It’s a bit of a pain but it’s a very picky circuit. I played it a bit tonight and it sounds immense so it’s definitely worth the effort!

What would you say is a good/bad ratio in buying in bulk?

 

[yazooligan]

It worked!

I’ve only tried putting in three MP-40A’s all with the same leakage. I might try switching in one or two with higher leakage to see if that affects the sound. As it is, the sound is very big and full, but not as high-gain as an original. You can max the volume and attack and still not have a ton of screeching feedback. Seems like an improvement over the original to me.