tube upgrade for first sound


Has anyone been able to improve on the stock tubes in the First Sound preamps? I was thinking about trying the Russian 6H23. Any thoughts? thanks
84audio
Drubin
How did your EH 6922 GPs work out? I sent back the first set I got because they distorted the upper frequencies badly. Well - I got the replacement tubes today - THEY'RE WORSE! Back they go! This time for a refund. I suppose I have to cross the EH tubes off my shopping list, for good. :-(

Anyone else having EH 6922 GP problems? Just curious.

pt
Paul, how many EH tubes are you going to try before you realize that NOS are the way to go, my friend? Even if you get a pair of EH 6922 that work well in the FS, can you ever be secure in the notion that the next pair are going to work?

I can't remember from your posts on other threads what NOS tubes you've tried. I'd like to suggest starting with Amperex 6DJ8 Orange Globe tubes...around $100 (or less)...contact Brent Jesse for availability. Joe's Tube Lore is of the opinion these are next best to the vaunted Amperex 6922 PQ Pinch Waists. Others may disagree. I'm just passing info here. If you want to skip the buy-and-try process, buy some Amperex 6922 PQ white label tubes made in the USA. You should expect to pay around $150/pair. More than that is too much. They can be found for less if you're patient and watch E-Bay.

That's all my secrets...for the world to see.

Stop wasting your time riding the EH train.
ditto what tvad said - I also had the white label PQ's 6922's and they were fabulous in the FS - and at a "reasonable" price to boot!
Hello men, :-)

I have collected a few NOS tubes already: 7308 PQ /white/US, and a Holland pair. 6922 USN-CEP. 6922 PQ/white/US. Pinched waists? Don't think so. I'm not gonna spend $500 for a pair of tubes, just on sheer principle. :-) So I'm set with NOS tubes.
I just wanted to try some current production tubes. As the price of NOS climbs, I thought, current production is at least worth a shot. The EH tubes didn't work at all in the FS. Nothing lost, except for a couple of dollars to send them back.

Ei Elites, is another story though. They work. And for $9.00 per tube, you might be surprised. ;-)

Thanks for the words of wisdom men. It is appreciated. :-)
p