Id say it sounds really good. I have mine connected to the pre-out from the Luxman so all Luxman goodness reamins. Then back to the Luxman after Dirac processing to the main in. I had read that you want to turn up the volume on the amp to almost max and let the Flex( it has a volume control and a remote too) control volume. This was bad advice. It meant that at -46.5 db on the minidsp i was putting out over 95DB. I typically listen at nite between 70 and 80 up to 85. I found some good advice. Set the minidsp volume to -10db then adjust the Amp volume until it is 80db peaks at the listening position. Then change the minidsp to -5db and see if that increases to around 90db at peaks. Then at 0DB on the minidsp shoul be peaking around 97db or so. It takes some adjustment with the amp volume to get it right but then you stop using the amp volume and just use the volume control of the mini dsp. What this does is allow bit perfect playback without any loss due to over driving the minidsp voltage wise. At -45.5db i was losing data. After making the adjust at -10DB down to 0DB the improvements took another leap in quality. With the wonky room Im in it made a big improvement in sound, the Luxman preamp goodness still applies and I get room correction. I dont do any other PEQ etc.
Flex minidsp Dirac Live
So I acquired one of these with a Umix-1 microphone. I have a Luxman L507-z that I put in separate mode which disconnects the preamp from the main amp. Im going pre-out to the minidsp then analog out to main in. This allows me to use room correction. The room Im in is not treated and wont be since Im moving a couple months. There are some weird room features. Fireplace on one long wall and a Huge German wooden wall unit on the other. Room is basically 11.5w x 16.5L.
I have the volume set so that at 0DB on the mindsp im putting out around peak95DB at my seating position and then -5db is maxis around 89db peak Question is: Am I loosing quality doing this. I read it is bit perfect running the minidsp between 0- -10db. Allowing the Luxman flavor to pass thru. The room correction does Time Alignment as well which is really nice. Sounds pretty good to me. Speakers are Cornwall IVs Opinions? Thanks in advance