New tubes for SFL-1 / SFS40

Looked it up and now understand the 6DJ8s are for the amp, not the pre. My mistake.

A synopsis of the characteristics of a variety of 6DJ8 tubes is located on the Audio Asylum at http://www.audioasylum.com/audio/scripts/d.pl?audio/faq/joes-tubes.html#6DJ8. Maybe that will help narrow down what tube will do the trick.

Hi Sean,
I know that you wanted to change tubes to get the 'tube' sound, but you may also get a lot of that type of sound by changing the coupling caps. Their are 2 pairs of caps to consider in the SFL-1, and a quad set in the SFS-40. Paper and oil caps may be the ticket for you.
Have fun!

Wow...this is getting interesting.

Dekay & Fpeel, thanks for the link.

Dtails, where can I find more information on caps? DIY? I'll do some research on AA. Thanks alot. This is fun.

No problem, do a search on 'paper and oil caps' should bring up places like The Parts Connexion, Audio Asylum. The Parts Connexion has them for sure www.partsconnecxion.com
Let the fun begin!

I just purchased a Zero Autoformer. My system sounds more dynamic (much better bass) and the high is more focus.
Because of the extended mid-bass, my system sounds more warmth overall.
I just purchased 4 6dj8 Globe Amperex from Ebay.
As soon as I get them installed, I will give you an update.
But the new Zero really helps my system.

My system doesn't sound dry and bright like before.