I'd focus less on the model number and more on the hFE and leakage, which are the biggest factors for how your fuzz face will actually sound. Many, if not most of the NKT 275s you'll find on eBay et al. are fakes. Even if you do find a real pair, it's highly likely that they are out of spec. Due to their popularity in fuzz face builds over the past few decades, what little stock remains has already been picked over by builders, and you're just seeing the rejects. I had great luck with Japanese transistors like these in my fuzz face builds—cheap, low noise, and in spec for gain and leakage. They clean up nicely and otherwise sound and behave exactly as a fuzz face should.Can I use nkt 275 red dots with this build?
NOS Germanium NKT275 Red Dot Transistor Set (Classic Gain) | Reverb
I'm selling a set of matched NOS NKT275 red dot germanium transistors. These are perfect for Fuzz Face builds and the same transistors found in very expensive boutique fuzzes. I bought these for a Fuzz Face build that I'm not going to complete. The leads on this set have been...reverb.com
or this one?
10 germanium transistors NKT275 Fuzz for sale | eBay
Find great deals on eBay for 10 germanium transistors NKT275 Fuzz. Shop with confidence.www.ebay.ca
I've got a125s but I wonder how nkt275s sound.
^^THIS^^I'd focus less on the model number and more on the hFE and leakage, which are the biggest factors for how your fuzz face will actually sound. Many, if not most of the NKT 275s you'll find on eBay et al. are fakes. Even if you do find a real pair, it's highly likely that they are out of spec. Due to their popularity in fuzz face builds over the past few decades, what little stock remains has already been picked over by builders, and you're just seeing the rejects. I had great luck with Japanese transistors like these in my fuzz face builds—cheap, low noise, and in spec for gain and leakage. They clean up nicely and otherwise sound and behave exactly as a fuzz face should.
Did you ever get your build bias correctly ? I just got done building 2 of them and like you I couldn't get the right voltages. I would suggest to try out what I did, socket r2 and r3, use a jumper on r3 and place your bias pot knob on the pedal to noon and try to get 4.5v on the collector via the bias trimpot. I also had to change r2 to 15k to get the 0.7v needed for the collector of q1 and base of q2. Now it sounds much better !I agree with all of you. It was just a question but after thinking about it that’s right. What sounds right to my ears is ok. I’ll check out smallbear! Thanks a lot.