Jolida jd-502p

I use a PS Audio Humbuster III plugged into my trusty Adcom ACE 515. Seems to work splendidly. By the way...I noticed a very small mechanical (not in the speakers at all) buzz from the 502 when using the KT120s...not a big deal...but there...so I put the Sovtek KT88s back in (after trying the stock Tung Sol 6550s for a few days) and the buzz got smaller, and they seem work really well with the Tubestore "preferred 7025s." I keep swapping between these 3 sets of power tubes...I can't help it...I'm becoming really good with my bias meter. Considering some Gold Lion KT88s now and that will give me enough power tubes to last until 2047.

Update: I switched the speaker outs on my 502p to the 4 ohm option, put the KT120s back in (I switch the power tubes around so often that I might wear out the sockets), and the slight mechanical hum went down to nearly inaudible. The combination of the new 7025 input tubes with the KT120s is sort of, like, awesome. I'm tellin' ya...this amp is astonishing.

Wolf,
I love NOS tubes but I have to agree with some that they are often not worth the price. I recently bought a Jolida 502amp and I love it. Here is what I am using for tubes:
KT88 Gold Lion reissues
Mullard 12AT7 (CV 4004) I believe - I got them from the Tube Depot
JJ Electronics 12AX7 (ECC 803)

I love the sound! Great detail, tight bass yet delicate highs. I am buying another 502 and I am going to run the pair as monos.

My mistake; the 12AT7 Mullard is a CV 4024, not a CV 4004. The 4004 is a 12AX7..

Yeah man. I've thought about the mono 502p path but my speakers seem to be efficient enough to make me not want to bother...and I don't really have the room with my current rack space...HOWEVER...let me know how that works out as I've never heard anybody's thoughts on 502p monos. And I could get a different rack...hmmm...