I too am using the Thor TPA30,T1000,Kharma 1.0 combo with a Meridian 508/24 player.To me Thor,Kharma match is wonderful. Some of the tube changes in the Thors' i've tried and am using to date ( tried many combos ).I have replaced ( T1000 ) the 12at7 with a Amperex B/boy or (Telefunken ) and used the Svetlana stock 12ax7. Nice combo. The Amperex B/boy is a touch warmer than the Tele, but has a punchier bass. I haven't done too much with the TPA 30 only change the stock 12at7 to a Telefunken ECC801s,which works very well ( great tube ). Hope these tips may help!
