Anybody know about "tube buffers".

Skip the tube buffer thing...been there, done that...put an MSB Link DAC in its place and the tube buffer only got in its way. Get yourself a sweet MSB Link DAC III if you're on a budget, and it should really have you smiling. A Perpetual Technologies for $699 if you can afford it. We are authorized dealers for both. Jeff

i have a z-man ase w/nos mullard tube. my (s'phile class-c) nad cd player is not suitable for serious listening w/o it.

Well.....I'll tell you what I've found. I tried the X10-D on the fixed outs of an Adcom GCD575 with no improvement. Tried it on the fixed outs of a JVC CD 100 disc changer with "a little improvement". Then I added a Adcom GDA600 to my GCD575, big improvement with the D/A converter. I have a Classe' 30 preamp and a pair of CA100's with low budgit cables (I'm auditioning now) I heard that Classe' amps sounded great with tube pre's like Audio Research ( but I can't swing that right now). So I stuck the X10-D between my pre and powr amp. MASSIVE improvement!!! The bass really tighten up and became firmer! The music sounded warmer. This leads me to believe that the X10-D would work best if you place it on a players variable out to drive an amp directly or between the pre and power amp to get a "tubed" sound.