Zesto Andros PS-1 Tubes

JTWrace.
The Andros-PS1 comes with four 12AX7 tubes, not 12AU7 as stated by one person above (at least mine did). I have been trying out some Gold Lion tubes for the past few months, and I am liking the results. Fuller sound stage, with deeper bass. The stock JJ tubes sounds great also, but I wanted to see what other tubes sound like in that unit. I am going to try some Tungsol next.

Let us know hwo the Tungsol compare when you try them. Have you asked George what he prefers, if any?

Anybody with new experiences to share on this Zesto 12ax7 question? Anybody
compared NOS Telefunkens with Amperex BBs, Sylvanias, etc.? I see Tonepub
had good results replacing the JJs with EATs - at $225 each, they better sound
good!

I received my Zesto Andros PS1 last Friday. A few days ago I put 4 new production Genalex Gold Lion 12AX7 tubes in the PS1. I think it was a nice improvement. I heard improvements in bass extension, soundstage depth and imaging. I was going to try some NOS tubes but the improvements provided by the Genalex tubes has me very satisfied. So far, I'm greatly impressed by the Zesto.

I've mentioned this to Cfluxa already, but I've compared the stock JJ ECC83s with the JJ ECC803s and heard very little to no difference. I liked the sound of the Gold Lions in my Chinook and wouldn't mind trying those in the Zesto. Smatsui, did you notice more gain with the Lions? I don't need or want any additional.