Phono pre for ZYX 100 Yatra high output

New tubes could certainly make a difference. Do you have a way to test them? Don't know the tube complement in a Ph-3, but there are tube equivalents that will give you more gain for certain families.

Here's a vote for the K&K Audio Phono Stage.
Have been running a ZYX Airy 3 for almost 2 years with fantastic results.
Unbelievable value.
Do a search here and on Vinyl Asylum for more info.

Try to track down a used Modwright phono stage if a new one is not in your budget (I think new they are $3000.00). I have a ZYX R100H and it has more than enough gain, and is simply great for the price - very dynamic, with a gorgeous midrange.

I will suggest a K&K step up transformer to get more gain. I know the STU's are another link in the chain but it's another option. Kevin is a great guy and I suggest giving him a call and discussing your situatuion.

I've recently just retubed my Ph3 after 9 yrs(standard tubes were sovteks 6922. The new ones that i got from ARC are EH)Got the low output zyx bloom first to see if i had adequate gain in my phono section before i took the plunge for the 4D.

Comparing the old ARC ph3 tubes to the new ones, In My system the New tubes obviously breathed new life into the sound but i would say the most that i gained in the volume pot was about two clicks at the most. Can't say if this would be the same in your case.

hope this helps,