I've used it. Outside of it being quite loud (keep the wife and kids out of the room, and get some ear protection wink ), it seems to do a very good job of level and distance setting. I have no complaints.
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Outlaw Audio 990
Rotel RMB-100 (x2)
Sherbourne Monoblock
NAD 214
Thiel CS1.6, SCS3; Emotiva ERD-1
SVS PC-Ultra
Mitsubishi HC-4900
106" Carada Criterion BW