Thank you for your explnation. As I read more about the CPS, I am coming to understand and agree to every point that you made. I will be using the CPS in small to medium size rooms. I don't consider myself having trained ears for sound reproduction systems, and that's why I rely upon other people's opinions and experiences on forums like this to educate myself and make buying decisions. I can see myself using the CPS a lot and it's a keeper.

My first test of the CPS reminded me of when I first picked up the accordion about 30 years ago. I come from a piano backgroud. At first, all the treble switches on the accordion sounded the same to me! It is sort of like Asians all look the same to Westerners and all white folks look the same to Asians. Now that I have been around vary accordions for some time, I can tell minute differences. Even the paint and finish of the accordion will have an effect on the sound of the accordion. I understand how and why people spend as much as $5,000 for touch up work on reeds.

I think you hit the nail on its head with your mention about the width function. That seems to be everything about the CPS along with the sound source. I quickly realized that the Roland digital accordion is not a good test instrument for the CPS as its left and right bleed into each other somewhat. So I changed the accordion setting to "Wide" in the menu. I also tested using vArranger and the SD4. Dan has created many nice multi patches for the SD2/SD4. I panned hard left and right on some instruments. The 3D stereo image was more dramatic and I liked what I was hearing. Well, only this morning I read the single page manual (which I should done in the first place) and it confirmed my experience. I think arrangers and modules with a lot of stereo patches can sure take adavantage of the CPS. I remember having read on this forum that some Yamaha piano patches do not sound good at all in mono because they are in stereo. Speaking of the piano, piano patches of the SD4 sounded great through the CPS. It handled the low register very well. That's what threw me off. I thought the CPS lacked somewhat in bass, but not when I played the piano, but it did lack when playing organ patches.