I have been using following setup with Squeezebox Touch for two months without any problem. Initial release of firmware (release version 7.5.1) was buggy but not the latest versions (release version 7.5.3 and beta version 7.6). The Squeezebox Touch offer higher bit rate and sample frequency (24bit/96kHz) than Sonos ZonePlayer 90 (ZP90), its digital outputs (coaxial and optical) and built-in DAC are also quite good. The Squeezebox Touch does not support latest 802.11n wireless protocol, fortunately I am using latest dual-band model of Airport Extreme with iMac on 802.11n/5GHz band and Squeezebox Touch on 802.11g /2.4GHz band so traffics are segregated by different radio bands.
iMac [Airport 802.11g WiFi] --> Squeezebox Touch (firmware: 7.6 Beta) [coaxial] --> W4S DAC-1 [coaxial] --> Schiit Valhalla Headphone amplifier --> Sennheiser HD 600 Headphone
Since most of my music files (MP3 VBR format) are ripped from commercial CDs with 16bit/44kHz specification, limitation of Sonos ZP90 player does not matter so far. To remove this limitation, you may want to refer to following modification offered by Cullen Circuits:
No idea why Sonos has to impose such unnecessary bit rate and sample frequency limitations even they have updated the ZonePlayer from ZP80 model to ZP90 model three years ago.
Originally Posted by woof37
I realize I'm resurrecting an old thread...but I don't understand why they're limiting their hardware like that. I'm about to take the plunge with a Sonos system myself...because the Touch & Radio firmware is horribly buggy and driving me up a wall...but the resolution limitations caused me to do a serious double-take. That could be a problem in the very near future, if not already.
Originally Posted by m1abrams
Originally Posted by Whitebread
Even with the use of an external DAC?