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Is there a lot of difference among 12AX7s
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Posted on May 25, 2012 at 08:18:30 | ||
I was thinking of learning to build simple amps for music and also for guitar. I was wondering if there's much difference mong 12AX7 preamp tubes. When I was a kid (in the 60s) it seems most integrateds would have six of them, like our Fisher X100b or a Sherwood amp I picked up on ebay, both of which were very sweet and clean sounding (sadly I had to sell them). Are vintage ones better, and why? Sorry if this is a dumb question! PS - for guitar use you want to be able to overdrive the preamp, so differing characteristics when overdriven would be relevant. Thanks! |
I guess Joe S's old post answers all my questions, posted on May 25, 2012 at 12:30:25 | |
and more. Well, he doesn't go into overdrive ... |
Thanks for the link! nt, posted on May 27, 2012 at 15:37:08 | |
nt |
Would you care to divulge....., posted on May 26, 2012 at 00:12:09 | |
The reliable American engineer that witnessed these manufacturing processes, or is this all strictly hearsay? |
RE: Any dual, hi mu triode...., posted on May 25, 2012 at 12:32:19 | |
Thanks! Do you recommend an affordable tube tester? |
RE: Every ingredient that goes into a unit makes a difference.. , posted on May 25, 2012 at 12:39:49 | |
Thanks! Do you have a favorite preamp tube for a Fender guitar amp? |
Yes sir!, posted on May 25, 2012 at 13:24:25 | |
For typical BlackFace front ends, the Raytheon BP 12AX7A or 5751 are the tubes I like in the input stage. Which is most critical in these amps. |
Thanks! nt, posted on May 27, 2012 at 15:19:45 | |
nt |