This is an old thread but grannyring, if you see this, I am interested in thoughts about upgrading my Quicksilver v4 amps. They are the earlier transformer models but I use KT-150 tubes. I love it but wonder what might make it even better. It was upgraded with mundorf supreme caps before I bought it.
I have a Berning tube preamp and the v4 feeds Verity Parsifal encores and a six pack of REL G2 subs
Thanks for thoughts!