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5751 tubes in Herron phono

Has anyone tried a 5751 tube in the Herron VTPH-1 Phono.

I put in a Valvo E81CC '66 tube and it sounded so much better than the stock tube that it became a close call to which was better, my EAR 324, or the Herron.

Will the X7 replacement continue this trend?
128x128glory
6 responses Add your response
bdp24's avatar
bdp24
9,788 posts
 

I’ve also been thinking about trying 5751’s in my VTPH-1. Frank Van Alstine used them in his PAS-3 mod, citing it’s superiority to the 12AX7. The 5751 is a little lower in gain and a little quieter, in general, than the 12AX7.

The EAR 324 is not the budget tube EAR phono amp, but the rather expensive ($6k) solid state one.

analogluvr
859 posts
 
Are you saying you're are you saying you think your EAR is normally better??

jbaxley's avatar
jbaxley
50 posts
 
Interesting Cmk!
cmk
397 posts
 
Yes I have. My favourite combination is:

Brimar 12AT7 black plate
Tesla ECC803s x2
GE 5star 5751 triple mica x2

This produced the best mix of detail and warmth/body.
sbrown
148 posts
 
I know from corresponding with keith that each tube is used a bit differently so you may get way with not changing all four. That said, I wouldn't do it unless you change all four since your going to create an unbalanced picture sonically.
glory's avatar
glory OP
1,614 posts
 
If I change to 5751 will I need to change out all four X7's?
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