Any suggestions on Tube Buffers?

In the above post, it should say......"driving inputs of lowish input impedance", not highish input impedance. Of course.

Viridian makes an excellent point! that is the primary reason for a 'buffer' - tubed or otherwise. In fact the BBA I alluded to stood for Buffer Booster Amplifier, and was made specifically for impedance compatibility. a common use for this is between a device of high output impedance to one of low input impedance, like a SS amp. You'll need to know specs to determine if this is the case for you.

The sound benefits in theory are fuller sound and non-rolled off extremes (characteristics of impedance mistmatch) but beyond that, there is an alteration in sound from the unit itself, impedance matching notwithstanding.

I must agree with the growing consensus on this thread. I would save for a tube preamp. I owned a Musical Fidelity X10v3 tube buffer, with the external power supply, and although I liked it for a period of time, I ultimately removed it from the system. It never wowed me like many tube preamps have.

I've been searching a little on Agon and found this thread with some people that have real experience with a buffer. It's all pretty positive.

http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1202443614&openfrom&1&4#1

I've tried earlier tube buffers and they don't reflect true tube audio.These products just seem to dampen harsh or hard digital characteristics.A true tube preamp will give you a start of what tube audio is.Going with a tube power amp will really put you in tube heaven that tube purist mostly seek.