Digital room correction, any recommendations?

Stereo or 2 channel?

Good ideas, Classicjazz.

1. Let me suggest two options for measurement:
RoomEQ Wizard (freeware) but you must add SLM or mic/preamp
XTZ (not free) but includes all necessary hardware/software

2. Good sources for room treatment materials:
www.realtraps.com
www.gikacoustics.com
www.atsacoustics.com
For DIY information:
www.sensiblesoundsolutions.com
http://forum.studiotips.com/

3. Audyssey works well but even with the Pro version, there is limited control. If you are OK with point-and-shoot, Audyssey is the way to go. Also, JBL and KRK have 2 channel devices which, although different, work similarly.
TacT, Trinnov and JBL Synthesis are much more capable and much more complex.

1. The PT units are simply not supported any more and had limited applications. (I have a pair if anyone wants them.)
2. All the MCH add-ons will require A/D/A conversions as there is no standard consumer MCH digital communications link.
3. The KRK ERGO is, indeed, based on Lyngdorf and it will accept an S/PDIF input.

Kal