Hi guys I finally got my new preamp valves in my powerball.
In the end i went for a JAN phillips 5751 in V1 and JJ 12ax7's in V2,3 & 4. and Wow did they make a difference. They basically got rid of all the harsh fizzy treble, warmed up the amp no end and gave the gain channels far more useable scope in gain before becoming overly compressed. Its even made the 4th channel usable for more recto like tones.
All in all its the best £45 I have ever spent on gear. :gif:
I've just got to get my g12k-100 hooked up into my 2x12 with the classic lead 80 i bought at the same time.