MusicalFidelity X10D Tube Buffer ,any good ?

Thanks Goroi and Ben. BTW, I am using a tube-drive CD player- Ah4000(Amperex7308x2,+Upsampling );just wonder if there is any sense of adding MusicalFidelity X10D Tube Buffer ? Should you(or anybody else) have additional opinion and suggestions I w'd be most happy to hear it .thanks
Simon

One purpose of this tube buffer is to add an extra feedback. When there's a lack of such it will definitely make responce more flat and linear. Certainly it will decrease distortions as well.

If you already have a tube in the line, I wouldn't think you'd need to bother with the x10d at all.

In the past it did not work for me.

Hello Simonleemd,

Had one when it was first introduced years ago.
Did some very nice things with my Marantz 67se but with one major flaw:
it actually slowed down the pace of the music.
The people at Stereophile I believe also came to the same conclusion.