Best Sonos ZP-80 Mod?

Thanks Barrelchief. So your results are a bit of a mixed bag: definite improvement via the cullen mod, but still not enough to match your cdp's, even when using the same dac (the AA internal dac fed digital from sonos). Perhaps the limitation in rate via the sonos limits best possible results? I wonder if there are any other reasons we are not accounting for? You did seem to suggest that the differences were pretty definitive, so there is obviously something holding this back. The only other note I might add is to echo your statement that this is all probably very system dependent. I would assume, given the rest of your system, that you also have very revealing, high quality speakers as well. Obviously the less revealing the speakers, the less the perceived difference (duh!). Hopefully we can all get to the bottom of this and find a way to make sonos what we all want: equal to a quality cdp at roughly the same cost outlay (ie, 5k cdp = 5k investment in sonos, mod, dac combination)

Has anyone tried the Emperical Mod, it's more money and he really knows what he is doing. Perhaps even more than Cullen, in that the digital domain is his main focus.

Does anyone have experience comparing the Cullen modded ZP80 through a quality DAC with the regular Slim Squeezebox 3 or transporter.

I have both the Sonos system and SB3, as well as 3 high quality DACs (Lavry DA10, Naim Supernait and Resolution Audio Opus 21......the latter two of which have built in DACs which can be accessed by digital sources)

Comparing the digital outs of the basic SB3 to the basic ZP80, the SB3 is far superior.....less congested, less compressed, better soundstage and instrument separation.

I do like the convenience of the Sonos system though. If I am to spring $500+ to get the Cullen mods, I would hope I would be getting a significant upgrade from the SB3 quality and close to the Opus 21 CD player quality.

Quite a specific scenario, I know, but does anyone have any insight to answer these questions?

Thanks, Nigel

http://forum.audiogon.com/cgi-bin/fr.pl?ddgtl&1204503359&openflup&9&4#9

http://www.audiocircle.com/circles/index.php?topic=42526.30

http://www.audiocircle.com/circles/index.php?topic=47245.new#new

Is a basic difference between the Empirical and Cullen mods is that in the Empirical mod the reclocker is an external unit (pace-car), where in the Cullen mod the reclocker is a board which replaces a board inside the ZP-80?