Golden Tube Audio board upgraded myself by soldering all the parts of BB, RC and Powersupply (PS). The 2 Huge Sonic Caps (the 2 white caps at the ends) installed at the bottom of the output tubes, 6 Panasonics Caps at the rear of the board, 2 Blackgate Capacitors at the middle of the board for cleaner tighter response.

I have 4 of the Golden Tube Audio SE-40SE (special edition) factory monoblocks at 160 watts to drive one channnel of  SRS 1.2TL that really make them sing loud and crystal clear.