Here is some updated info for you..
Proficient Audio is part of SpeakerCraft, and about 2 1/2 years back they decided to enter the AVR biz. Some of you may not be aware of who Speaker Craft is, they invented the in-wall loudspeaker many years back and actually built products for several brands including JBL, Sonance, Polk. Both Proficient and Speakercraft are well-respected in the field of custom audio/video installs.
To develop/design their AVR, they hired a team of US audio, video and mechanical engineers, and hired the leading AVR design engineer/manager from Harman International as team leader. Quietly the team developed (2) models the M80 and Vital 910, and started shipping about 18 months ago. They took their AVR design to a well-respected off-shore assembler to have it built, after the M80 and 910 were in mass production NAD negotiated a deal to market a clone model as the 747.
The M80 and 910 is an incredibly well-built AVR using old school ground rules, use high grade components and deliver high quality audio and video streams. But as you can see the last 12 months has been dismal for the AVR market segment, the big brands hyped the push for 3-D and failed..
Next they started a big bloody, price war...
After the dust settled, everyone lost big money..
After all of the ruckus, Proficient and SpeakerCraft pulled back from the market and I actually bought about 75 pcs of the M80 for my A/V install biz. Now I am down to about 4 pcs but I can tell you the M80 and 910 are far more reliable than even the higher end Denon and Onkyo AVRs. If you check closely some of the on-line sellers you may still find a single pc of the M80 or 910, and they are still selling for close to their original price.
Just my $0.02...