Wadia 521 Converter

Is there any Wadia 521 DAC owner to write his comments on its performance? and what is its retail price?
Thanks in advance.
I am also very interested in this DAC and am cusious how it compares to the Mcintosh MDA-1000.


581i player is esentially transport + 521, so whay you get out of 581i is preaty much it.