Tube pre amp

Vincent makes great and seemingly underrated stuff...until late last year I'd been using a Kavent S33 SS preamp which is a re-badged Vincent. Great sounding dual mono fully balanced preamp, but since I like tubes and have been using a Dennis Had SEP power amp for a while, I thought I'd try a Schiit Freya for its tube stage, and because it's curiously inexpensive. The Freya sounds great and I've been tube rolling and enjoying it immensely...there's nothing quite like it on the market, and certainly nothing with its features for anything near 700 bucks.

Most tube pres use tubes like 6SN7 or 12AX7. 

Some more exotic pres use direct-heated triodes like the 300B or 2A3. I’ve heard here and there that these DHTs are the best for their soundstand / imaging capabilities — is this true?

@madavid0 I think those qualities you are describing are typically applied to DHT amps, preamps using those tube types are fairly rare.