I have tried all the 5751 tubes in my 834p phono stage and found the Eat 12ax7's are superior. Not cheap,but the best.
Tim
Tim
Replacing 12AX7 to 5751 for pre-amp
Does anyone try NOS Sylvania 5751 replacing 12AX7 for preamp? My friend convinced me trying 5751. I did try them for Dynaco PAS 3 and woo sound is warmer, treble is softer special with vocal. Bass is more tighten than before. I want to try more AU7 or AT7. Do they ok to try? I know that we can replace any 12AX7 with other lower current.