What’s the best tube for a Sonic Frontiers SFL-1 preamp

Hello all,
I just acquired a SF SFL-1 preamp. What’s the sweetest tube any of you SF fans have used in this preamp?
Thanks

skipper32002-13-2021 10:35pm

petg60 Details Discussions Posts This discussion Message User 1,486 posts 02-13-2021 at 11:45pm Copy Comment URL Report Comment Edit Delete I am not familiar with SFL1 but a Valvo 6201 or 12at7wa will suit it nicely. Going sweeter a Mullard CV4024. G
Post removed Feb 14, 2021
bgross Details Discussions Posts This discussion Message User 397 posts 02-28-2021 at 02:51pm Copy Comment URL Report Comment Edit Delete I run a Genalex, Gold Lion in mine,... fabulous! GL with yours @skipper320; it's a terrific linestage that paired with the right amp will bring you pure sonic joy. I've run mine with TAD, Hibachi Monoblocks, a Cary 808R tuber, and soon a Sugden Bijou (Class A) "AmpMaster". It's a wonderful piece
adg101 Details Discussions Posts This discussion Message User 1,063 posts 02-28-2021 at 04:12pm Copy Comment URL Report Comment Edit Delete Mullard 6201 I believe is what I used to run when I had a SFL 1, but that was sometime ago. Very nice preamp with the right tube and for the money. Sold the SFL 1 and moved to a ModWright SWL 9.0 SE which I liked much better. I recall the Mullards were what everyone was using and UpScale Audio recommended too which is where I think I purchased from. I remember the Mullard was much better than the stock tube if that helps.
joecasey Details Discussions Posts This discussion Message User 484 posts 02-28-2021 at 05:24pm Copy Comment URL Report Comment Edit Delete SFL 1 lean side of neutral so my favorite was Amperex / Phillip Holland.