Thanks for the info. I have just bought a KGST s/no. 34 from a fellow head fi forum member. So, I would really appreciate if you could advise me how to adjust zero and balance for the tubes. And any other tuning that must be done and check, before listening. It's shipping from Switzerland to Australia. The average incoming voltage is around 240V at my place.
I'm currently using my Stax 727II with feedback mod, driving L-700.
Cheers
Tachi