Who makes the least expensive Tube Pre-Amp?

Sonic Frontiers original SFL-1 is available used under $500. and is an excellent sounding hybrid tube pre-amp with a single tube-- and yes you can definitely get that lush tube sound with just a single tube. I used one for several years. Cheers. Craig

I think most used Conrad Johnson tubed units are a "bargain"
At least for my ears and wallet. I bought a used PV11 in 1998 and it made a definite improvement to my system. No current "upgrade fever" as I still really enjoy the music through my system. It has an excellent phono stage to boot if you like playing with vinyl.

In any event, have fun!

ASL, Audcom, the new tubes pre's from China are, sadly, very good, and very affordable.

Build your own - that's EXACTLY what I did. Bottlehead makes one called the Foreplay. Its super good, costs something like $250, and takes about 8 hours to build. I hadn't soldered ever, and I was able to put it together without a single problem. GREAT instructions.

If you like it, you can upgrade it. Or you sell it here for what you paid and buy a nicer make/model.

my vote for an entry-level preamp goes to
Quicksilver.

If you can do without a remote, it can be had
for under 500$ ( I think the list is 1100$? ) and sounds
better than the remote version.

It doesn't have the warmish romantic *tube sound*,
but, its neutral midband ( I prefer it that way ) has a
plenty of resolution, clarity and immediacy which lacks in many entry-level
preamps.

A good bass control and excellent pacing are added bonus
for most tube preamps in this price range as well.

Only caviat is that it has a good amout of gain so that
make sure it'll work with your amp before commit.