Wc65mustang, sorry, what does AFAIK stand for? And do you mean there is no better tube than the chinese stock tube that came in it? (surely not!) I see quite a few old PX4's on ebay.
Ecclectique, no I don't think I'll be putting a $5K+ pair of tubes in my $5k pre-amp!
Mark
Ecclectique, no I don't think I'll be putting a $5K+ pair of tubes in my $5k pre-amp!
Mark