Hi, Lanny. I've owned the X-1 and X2.5. But I've never had anything underneath them except for Star Sound's Audio Points coupled to a mechanical transfer to ground designed rack which also was sitting on Audio Points.
I've also never used anything to connect to the X's except for a Foundation Research LC-1 passive in-line power conditioner.
I've never had concerns with either unit regarding bass or lean sonics.
The X-1 power supply sat on tiled fireplace hearth floor with Audio Points underneath simply because I did not have an extra shelf for it.
You would potentially start to defeat some of the purposes of the separate power supply should you stack them.
As for lifting the ground, it is my experience that the best sonic benefits are gained when the amp and preamp grounds are lifted and the cdp ground remains in tact.
I believe you still own the JC-1 amps. If so, and if it's sonics are capable of what reviewers had to say, then I would look at the interconnects and speaker cables.
Contrary to some beliefs, cabling can make all the difference in the world.
I would recommend contacting an Audience dealer to see if you can obtain a 30 - 60 audition on their Au24 line of speaker cables and interconnects.
It was amazing for me what the Au24s did to minimize/eliminate so much time-smear that appears so common in the other cables I've owned or demo'ed. Especially in the lower bass regions. In my opinion (and apparently some reviewers'), the Au24s just might be a/the best buy cable as some have claimed them to be better than the much more expensive and supposedly very good Nordost Valhallas.
-IMO
I've also never used anything to connect to the X's except for a Foundation Research LC-1 passive in-line power conditioner.
I've never had concerns with either unit regarding bass or lean sonics.
The X-1 power supply sat on tiled fireplace hearth floor with Audio Points underneath simply because I did not have an extra shelf for it.
You would potentially start to defeat some of the purposes of the separate power supply should you stack them.
As for lifting the ground, it is my experience that the best sonic benefits are gained when the amp and preamp grounds are lifted and the cdp ground remains in tact.
I believe you still own the JC-1 amps. If so, and if it's sonics are capable of what reviewers had to say, then I would look at the interconnects and speaker cables.
Contrary to some beliefs, cabling can make all the difference in the world.
I would recommend contacting an Audience dealer to see if you can obtain a 30 - 60 audition on their Au24 line of speaker cables and interconnects.
It was amazing for me what the Au24s did to minimize/eliminate so much time-smear that appears so common in the other cables I've owned or demo'ed. Especially in the lower bass regions. In my opinion (and apparently some reviewers'), the Au24s just might be a/the best buy cable as some have claimed them to be better than the much more expensive and supposedly very good Nordost Valhallas.
-IMO