Experience with Musical Fidelity X-10v3?

I am using it with the PSU power supply between my MF A308 pre-amp and A308 power amp. What a difference!! Everything just came into focus. More depth and soundsatage. The bottom end was tighter and well defined. One warning, if you use this configuration, be sure to turn the buffer on first, wait a couple of minutes, and then turn on the rest of the equipment. It needs time to set. Because the buffer has no attenuator or mute switch, it sends out a nasty signal that can blow your speakers !! I was originally useing it between my A308 CD player and the preamp when I decided I wanted the same effect with my entire system. It sounded great that way, but sounds better between the pre and power amps.

I use it with a NAD C542 cd player and it is not a huge difference in sound but it does take the slight edge
,harshness,brightness out of the sound. I have Klipsch La Scala speakers and if you use the wrong equipment they can be bright or harsh.

I had the power supply also but when I used both the buffer and power supply I did not hear any difference. So I sold the power supply and tried the buffer and then I noticed a difference. Probably my imagination but it sounds better to me.

If you have the extra money to spend on this then give it a try but if not save your money and get a tube cd player later.

If you also use headphones, an appealing alternative is a tube headphone amp with pre-amp function like Woo Audio 3.

I believe it's worth trying if you have an all ss system to inject a little tube warmth/holographics/liquidity into the mix without losing any detail.
It's a fun experiment. You can always resell without losing a lot of your investment as I just did when I moved to a tube integrated and didn't need the buffer anymore.