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
paul - after the month of play, there are many tube options to consider, as has been outlined extensively here. the 7308's and 6922's are designed for looong life, the 6DJ8's somewhat less. i havent had mine long enough to weigh in on how the FS itself affects tube life.

Mine never gets warm either, not at all. some of that might be the power supply living in another box.....
Paul-

Yes, as I can recall I do believe the break-in recommended from Emmanuel was 30 days of play. I personally did the 24/7 as it was the stock tubes and have a dedicated listening room, so keeping the system on at night doesn't affect others ability to sleep. The discharging of the caps does seem to help speed up the process as Emmanuel will tell you. Just remember to make sure the unit is also unplugged as well as turned off (if I remember correctly - lol has been some time). I think it may have been mostly broken in around 3 weeks or so when I started swapping stuff around, was impatient. Then I put it back to the stock power cord and such to wait that extra week, figured another few days won't hurt me. For when you are done, the unit does breathe easier and appreciated a good power cord, as well as NOS tubes take the performance to the next level. Hang in there.
Thanks men. This really does feel like being a member of a club.
:-) It's funny how something like audio gear can bring people from all around the country together.

I'll be patient and I'll keep you posted. BTW - I already picked up a Mini Khan power cord for after break in! :-)

Be well guys.

Paul
>I already picked up a Mini Khan power cord for after break in! :-)

And you thought tubes were expensive!
Question....According to Emmanual, (and the owners manual) the break in period for an FS is 2 weeks. But alot of you fellow FS owners advise a month, before Tube and power cord experimentation. Any reason for this?

BTW - Yes the power cord was expensive. If it doesn't make a difference in my system....it will be up for sale. :-)

Thanks guys

paul