This is a Stax SRM-T1 with a CCS mod that increase its power to higher levels. I used it with SR007 and it works great, even an EQ can't reach the limit of this amp.

I have the bill from Ebay.

From my understanding, it has been revised, recap and CCS modded with mod with ECC99 tubes.

It does regular and 2 pro bias that output all the time. Insanely versitale for listening with a friend or testing gears.

Thanks