High End SS Preamplifier Ayre, EMM Labs, ML, or Pass

EMM Labs Pre 2 and the latest iteration PRE, in my experience, are the best of the best. The best cost benefit ratio would belong to a used PRE 2 (available on the Internet).

I'm currently running an Ayre AX-5 Twenty (integrated amp.) After auditioning Ayre pre/amp separates. I would absolutely consider Ayre as a first choice if/when I upgrade to separates.

Customer support has been outstanding (no issues with the unit, just lots of curiosity and Ayre is willing to indulge me.) Great insight and guidance.)

I find myself listening for 4+ hours with no fatigue on a regular basis.

(I auditioned Ayre separates and Audio Research separates. And then later Ayre and Audio Research integrated amps. Bought the Ayre integrated.)

I find that a McIntosh tube pre amp integrates well into my system.  They are worth a look.  Besides, they hokd value like no other if you seek to change.  Let your ears decide and listen to your preferred choices if at all possible.  Enjoy the journey

ursus13
Welcome! I, too, am strongly considering the Ayre AX-5 Twenty.  Per your experience,  I did not detect any fatigue after hours of musical enjoyment.
Happy Listening!

Another Ayre supporter......build, sound, support..all great