since a number of us use Sonos products within our Meridian systems, I thought the following might be of interest. I have not yet upgraded my ZP 80 but will probably do so...http://cls.audiogon.com/cgi-bin/cls.pl?dgtlconv&1212889261
The Sonos system is a wonderful wireless digital system to move music from your computer around the house. Audiophiles have asked us to help make the ZP-80 digital receiver truely high end.
Our SONOS reclocker upgrade is now available. This upgrade entirely replaces the mediocre Cirrus Logic CODAC and the associated high jitter clocks used in the Sonos ZP80. The mod was designed to integrate the SONOS system into a high end audio system thru an outboard Digital to Analog Converter.
The mod was designed by Cullen Circuits in California.
The upgrade consists of installing a new custom Cullen Circuits designed pc board that contains:
1) A high end sample rate converter made by TI
2) A low jitter clock with less than .5ps jitter
3) A low noise power supply for the clock
4) A new micro processor
5) Input & output digital buffers.
6) New upgraded RCA output jacks are added.
This new custom board is installed into the SONOS and directly converts the I2s into 96k up-sampled SPDIF. This new ultra clean low jitter signal is now available thru both the Coax and optical digital outputs. The SPDIF output`s sample rate can also be factory configured to 48k, 96K or 192k.
The sonic benefits are quite dramatic. An entire level of low level grunge (hash) is removed from the sound. This improves the low level detail and imaging. The bass is now much tighter and controlled. Inner detail and transient attack are bothy greatly improved.
The upgraded ZP 80, in the Cullen reference my system, with streaming lossless Ripped CD`s, over his 100 MBPS network, is now a true high end source.
We accept Visa and MasterCard as well as money orders. Read our AudiogoN #1 rated feedback and call 770-667-55633 to order a unit or get your ZP-80 modified.
$550.00 + frt. to your ZP-80
New ZP-80`s are available fully modified for $890.00 + frt.
Link to more info http://www.underwoodhifi.com/
a reply to my question on extending the 'word length' of the sonos to 24 bits going into my 518...
Dave, Stock ZP-80's outputs 16 bits @ 48k. It cannot go more than 16 bits. We can make it 96K in the mod or 192k for that matter. We feel 96K sounds best. The mod should work in any situation where you run the ZP-80 digital out into a DAC.
It dramatically lowers jitter and gives you smoother midrange more, more transparency and better low level resolution.