this works GREAT!
granted, if you only record one musician at a time this isn't for you, but if you record multiple players....
this (IMHO) is a vast improvement over the RME mixer... I seemed to be constantly changing levels... someone would turn, different tone and someone else couldn't hear something... and usually,a s the session wore on, hearing would set in and everybody would have a need to "turn it up!"
Mixers are 8 channels, more than enough for most any session I can imagine anyone in a home/small to medium studio would need. Additional mixers are ~$250 each
total cost for system (4 mixers) with cables and Atlas mounts (purchased separately) was just under $1500
The "package" comes with Cat 5 cables (4 - 50') but I chose to run my own and crimp the ends so as not to have excess cable (not recommended unless you have a lot of patience), and I wall mounted the mixers using Atlas podium mounts with short extensions
The RME Matrix/mixer is a great idea and tool.... but (again IMHO) it has it's limitations and drawbacks.... the Hear Back lets the individual musician adjust HIS OWN DAMN MIX!
there I said it!!
BTW, Sweetwater matched the lowest price on e-Bay (surprised the hell out of me)... and I still get their support and 2 year warranty