Multi Chassis Isolation?


Specifically the Opus 21, but any inforamtion about isolation needs for a multi chassis CDP (or any other component for that matter) is greatly appreciated.

I presume the drive chassis is the more important of the two?

Any and all commments and experience welcome.
distortion

Showing 2 responses by tobias

I have run three two-chassis digital sources, and I own two now. If you mean vibration isolation, IME you are quite right, it affects the sound of the transport more than that of the DAC. However this has not been invariably true when it comes to electrical isolation. Some report the DAC responds better to premium power cords and other measures directed to the AC supply. IME again, it has turned out to be about equal: in some setups the transport likes clean AC better, in others it's the DAC.
I have been using BDR cones (a mix of Types 3 and 4) under my transport for a few years. I found them more effective than Isobearings or nothing. Recently, though, I've tried a set of FIM 305 bearings. The 305 is a pair of discs, each with a concave depression in one surface. You place a bearing (steel, which is standard, with tungsten and ceramic available) between the two discs and rest the transport on the top of the assembly, three of which are needed. The effect was to open up the soundstage even more, better bass articulation, cleaner music generally.

I have not heard BDR cones with pucks, so your current setup may (or may not) be giving you everything the 305s can give already. The 305s made my transport do the shimmy when I pushed a button, by the way, but this didn't seem to affect playback, and the improved sound was worth the minor inconvenience.

I kept the Isobearings for my DAC, where antivibration measures made a very much smaller improvement than they did on the transport.