Indeed!I see you've got sockets ready to go. I agree with the above, but I also think you should try the J201s to see if you like it if you've got them lying around. You may be surprised. Or disappointed.
In some cases you can expect a different sounding circuit, sometimes not. And sometimes you'll need to change a value of the resistor/trimmer or even capacitor here and there to accomodate for the different model of the transistor.But I understand the differences in values will cause differences in sound.
Great question because I have three J201s and three J112s. might just be a trail and error deal, glad I socketed.So I posed this question in another pharmacist build thread, but didn’t get any bites, so I’ll drop it here too. what if say you have 3 of the 4 5457s and a handful of j201s if you were to substitute 1 where would you place it and what would be the effect? My theory is if it were a Q1 sub it would be like a boost into gain, but at Q4, it would be more of a boost after gain. Thoughts? I’ll admit this is def a theoretical now since I went ahead and harvested a 4th 5457 out of another build, but would still like to know
Wait is the the same Barry as Barry?!Barry's got some not too expensive considering they're hard to get
(*) JFET 2N5457 - Guaranteed Genuine - GuitarPCB
(1) Genuine 2N5457 JFET Transistor from my own personal collection. Hand Tested and all are in the proper range for guitar pedals.guitarpcb.com
Here's a stompville article on substitutes
Substituting the 2N5457 – Stompville
stompville.co.uk
Haha no Barry at GPCBWait is the the same Barry as Barry?!
Well, I'm almost certain Barry has 2N5457s from Barry.Haha no Barry at GPCB
Send me a message, I’ve got a bunch of SMD’s on adapter board, or just the smd whichever you prefer.Wrapping up the Pharmacist build and wondering if I can use J201s as a sub for the 2n5457s.
Thank you build gurus.
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This is the real answer; you won't know until you try.since you socketed the board for your transistors, feel free to experiment. put the j201s first, then last, then try to alternate them. it will be interesting to get your thoughts on the differences in the sounds.