Lon,  I'll be interested to hear how the blocks work under your PWD MkII.  I am using this dac and am looking for a way to tone down the lower treble / upper mids.  I am using ceramic cones currently which are better than nothing and better than herbies tenderfeet but I suspect there is a more optimal solution.  I am running the PWD MkII with 2.02 firmware into my CSP2+ / Taboo with LCD2.1 headphones.  It's a good rig but with just a little hardness to overcome.

SETamp, sorry I missed your post. I've got Herbie's Iso-Cups under my PWD Mk II with Deep Moss Quartz 1" balls (set up so that the balls don't make contact with the felt) and I'm very happy with this, considerably different than Tenderfeet and seems to not have any hardness (I had some treble hardness initially but after 500 hours or so I think it burned away, and I use the treble cut circuit on my Torii to tailor treble for my whole system, that may be helping too). I recently played around with just having the PWT sit on top of the PWD, and on Tenderfeet but found that if I use the same balls in Iso-Cups under it as well and avoid having the balls sit on the felt pads I get the best results for Redbook.

I love this DAC, it's great with hi-res through optical or coaxial, and I think I love the Redbook so much in part because I use the PWT and its HDMI connection; I think having the I2S connection makes a difference. Although not as pronounced as with the Torii, location of the Iso-Cups makes a significant sonic difference.

In between my last posts I've done some thinking and I think I will try the Ingress Audio rollerblocks under the PWD in time but my plans for my next pair is to try them under the CSP2+ as that will influence the sound from all my sources (PWT/PWD, Blu-ray and DVR through PWD, ZP3). I expect the rollerblocks to work better than the Herbie's Tenderfeet there now. If I can then order other sets of rollerblocks I'll try them under the PWT and under the PWD and perhaps after that the ZP3. If you decide to order a set and try them under the PWD before I do, let me know how they sound.

will, if you order three, I've now mine configured with one in the front and two in the back, seems better this way.

Received my forth set today for my power conditioner and also some of the tungsten carbide balls. The new bearings weigh almost twice as much. It's too early to form impressions yet, but i did notice the new bearings make listening at lower volumes much more satisfying.

So OC, any difference/improvement with the rollerblocks under the power conditioner?  I've tried different footers under mine but I"m not sure there's any big differences. . . . .

Interesting. I'm still waiting for my second order, going to go under the CSP2+. . . . If it's a keeper there I'll try another set next year under the DAC.

I notice that like the Iso-Cups these roller blocks influence different sounds according to their placement. I have those under the speakers about an inch in from the back corners and about an inch and a half in from the front center, and under the CSP2+ two placed so that the outer edges are just at the chassie edge, and likewise in the center of the front chassis bottom.

I ordered four more sets, which should arrive around the new year. Planned placement is under my ZP3, my PWD Mk II, my PWT and my Denon DCD-A100. Sets of three. And then I'll decide whether to order a set of four for under the Torii. . . .

Well, with these under the preamp I can say that these are better than the Herbie's Audio Lab Tenderfeet. The next batch will let me know if they are better than Iso-Cups under source components. That's a bit of a stiffer contest but I think they may win.

As I think you mentioned before, the Iso-Cups are so good under the Torii I'm loathe to move them out!

Just a quick note (my computer died while I was on vacation in Ohio and I'm having it repaired). . . .

I got three sets of the roller blocks and played around with placement. My general conclusions: four under a speaker or component sounds better than three; these sound better than Herbie Audio Lab Tenderfeet, but I still prefer the Isocups under the Torii by quite a bit, and under source components but a lesser bit.

Got a notice from Ingress Audio Engineering that they are now shipping with one of the blocks featuring a recessed groove and O-ring.

Well, I eventually found I did not prefer these under components in comparison to the Herbie's Audio Lab Iso-Cups, and though they may work a bit better under my CSP2+s and ZP3 the way I have these set up they move about too much and I have gone back to using Herbie's Audio Lab Tall Tenderfeet there.

But under speakers? The Roller Blocks rule. I have them under all three sets of Decware speakers in use in my house and Dad's. And this week I decided to try to place large Herbie's Audio Lab Grungebuster Dots between the speaker and the top of the Roller Blocks. This has been a positive change and I'm keeping it for a while.

Man twenty years ago I would have thought I was nuts playing around with isolation control products, but I find they make a difference and I like this as much as tube-rolling, sometimes more.

Are any of you using these on carpet? Or all wood floors?

I've got cheap spikes on the Herbie's Giant Gliders because I've got thick berber carpet and padding, and I honestly wasn't wow'd...except that they are super easy to adjust with the gliders! LOL

Mine are on laminate floors.

Lon, yes they do tend to be a bit lively under other components, especially with tubes. But I really like under my solid state DAC. They seem to bring some organic like smoothness without any dulling or damping if that makes any sense.

LOL

I am using the clear iso cups with the base and the cheap lampblack balls.

I am going to get some. Thanks Lon.

I'm no longer using the Ingress Rollerblocks under my speakers (or anywhere actuallY). I've found that since I have the ZROCK2 to augment lower frequencies that the early (one bearing) version of the VooDoo Cable Iso-Pods works best under my HR-1s. Really open midrange and sweet treble. As these tend to diminish lower frequency output a bit a touch of the EQ from the ZROCK2 makes compelling sound. I hate to shut the system down.