Best tube integrated with Merlin TSM-MMI?

38 watts is ultralinear spec for the Primaluna Dialogue Two. Mastersound is 20 watts Class A. Don't know about the headroom.

Give a listen to the VTL IT-85. I've got one with upgraded caps driving Dynaudio Special 25's. With good NOS Mullard EL34's it will bring out the wizard in your Merlins...

Unison Research Sinfonia?

I just purchased a cary sli-80 f1 edition to pair with my tsm/mme`s. I`m running it with 6550 power tubes right now and the music is beautiful. Man, what a huge sound stage. At Bobby`s suggestion, I just ordered a quad of e34l power tubes for it. Also have a pair of cardas gr ic`s coming.

Bottom line...love the sli-80/merlin combo.

I recently bought Vincent V-60 amp and upgraded tubes recently as well and it's a keeper.