So why not a first small report;

Put the larger one (see my picture in a previous post) under the NOS1a. My situation : Sturdy cabinet of 2m60 or so wide, flat on the floor (hard to lift with two people). In there glass plates (= not the best) and on that the equipment like the NOS1a. And that on "special" footers.

Put the bambo plank with the slits upside (dunno why, but one has to chose something). Already used footers and NOS1a on that.

Turned on the music which was a next track from the album I played the day before, where I left off.
Grabbed the plastic wrap from the plank to throw it away a few doors further in the house and when I left the room the first "hit" of the music gave me a "more bass".

With this in my mind I came back in the room and within a second or two a "more bass !" was thrown at me from our new born audiophile.
"How the heck do you know that, because you never heard this track". -> Well I do.
Oh.
After 10 seconds more a "more thinkling highs" was put forward. And yes I agreed.

Yes, for sure it was all over different. And for the better I'd say, merely derived from those more tinkling highs. Elsewhere I would have decribed it as "more bells again".

With a doze of opportunism, already after half an hour I thought "what the heck, let's do the PC too".
PC is in same fashion in that cabinet and it has its own footers (the Silverstone cabinet). Side note : I removed the other footers as was the subject of this topic, already two weeks or so ago. So with 2-3 weeks of them I didn't like it any more. Say a too shrill sound. Highs too much emphasized or something. Maybe not wrong as such, but brought a slight flavor and I don't like flavors.

Knowing that it is far from the best to apply such a 2nd change so quickly (I better had not done that), from there it was down hill. So, same plank (I bought two of everything), in the same position (slits up).

The highs now went towards explicitly silky. I estimate that most of you will shout "huray !" but for me it was too nice. Reminded me of the first time I applied a i2s interface to the Juli@ which was in-PC back then, instead of SPDIF. Super silky.
But the remainder of the evening I found myself in the midst of too few dynamical sound. Cymbal hits were not that any more. Nice maybe but not so realistic.

Of course it is impossible to judge this right, especially because I listened to the "NOS1a only" for no more than 30 minutes. Anyway, tonight the PC plank is going to be exchanged with one of the other appliances (carefully selected of course for their different perceived properties ) and then we'll see again. Or hear.

Peter