Wavac PR T1

In the game of top contenders any "long term" experience, beyond the initial thrill, with one of the (considered to be) top pre-amps:

Kondo, AN UK, Wavac, Audion, Dartzeel...

Wavac PR T1 , retubed with NOS Mullards from the 60's has kept me happy for over a year now.
Kondo M77 is the best preamp i have ever heard (besides M1000) and i considered it best buy in the Kondo chain.
I agree with Detlof, good Mullards and Brimar will do justice to this preamp. I would describe in short that using this preamp there seems to be no connection or barrier to the speakers. Never feel to further compare with others except perhaps Kondo is its main rival