Re: Swapping 12AX7s to a 5751, 12AT7 or 12AU7?

KingofTone@xxxxxxxxx wrote:

It's completely safe to swap out any of those preamp tubes, I like the
5751's in V1 of some of my Fender amps (as did Stevie Ray Vaughn),

I've seen this mentioned enough times that I'll have to pull out my NOS triple mica 5751 and give them a try in my Super Reverb. The triple mica's won't hurt either, since it's a combo and the tube get some decent vibration at volume. They could be an improvement when using my EMG guitars, since they tend to overdrive the front end too much with 12AX7. I'm currently running old RCA that test used but not used up. I believe that they are ORIGINAL to the amp.
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