Hi Agear, Rowland Aeris (including external power supply) lists in the US for $9800. World wide dealers are found at:
http://jeffrowlandgroup.com/us/distribution-3.html
Input protocols as follows:
1x USB — accepts up to 24 bit PCM at 44.1, 48, 88.2, and 96 kHz sample rates
1x Toslink — accepts up to 24 bit PCM from 11 - 192 kHz sample rates
2x SPDIF — accepts up to 24 bit PCM from 11 - 192 kHz sample rates
Regarding Tenor and class D.... Thankfully, there is a world of difference between the sound of raw ICEpower low-end implementations of old, and the involving musicality yielded by some of the recent implementations of NCore NC1200 like the Merrill Veritas used by Matt. I have not had the opportunity of comparing Veritas with Tenor, but had Veritas in my system for several months, resulting in my more than favorable PFO review:
http://positive-feedback.com/Issue68/merrill_audio.htm
Guido