Pass Labs X-1 Preamp Questions:

The X-1 is not an overall warm preamp, it is neutral sounding to my ears. The best power cord I tried was the Elrod Sig 3 on it. It added a slightly warmer mid range with a little more body. I never felt the bass was less than solid in fact I found it to be one of the best bass preamps I have heard. Try a 14" bicycle inner tube under the unit to see if it makes a change in your system and if it does and you like it, you'll know what to do. Also put some wood blocks under the unit and experiment. My experience may be quite different that yours do to room and vibration effects. I never really heard any real difference with the power supply on top, under or separated from the main unit but there are others who will have a different experience. I compared the X-1 to over a dozen preamps including tube preamps. Each preamp had their own strengths and weaknesses and added a different flavor to the sound but the only one to make me want to change was the Tom Evans Vibe. It was that much better and more $$$$. I never found AC a problem with the X-1 so maybe someone else can offer some suggestions.

Happy Listening.

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

1. The pass X-1 is sensitive to cables and cords. The best moderately priced solution I've found is the cardas golden reference PC, and Harmonic Tech Magic link cabling

2. Get a good solid platform under it, but as far as cones etc. goes I noticed changes but never real overall improvements. You'd gain something you'd loose something.

3. I noticed some improvement having the two units on different shelves. Maybe it's not good to have a source of electromagnetics right next to the inputs on the control section.

4. never tried

5. The pass has excellent tight bass control and I've never heard it's bass quality as being a complaint. Try a golden reference on it to richen it up a bit perhaps. I would probably look elsewhere for this problem. You want real good bass try a Cary audio 306/200. You won't bother with SACD untill you can afford something like a Esoteric X-01

6. Most importantly, the X-1 shines with balanced connections in a fully balanced systems. Try some Magic Link XLR's between the CD to pre and pre to amp and you'll get a lot more fullness, depth and tonal texture out of it.

Are you running fully balanced?