Yes, I wired it up this past weekend and put it through a simple test vs my Crest CC4000 amp.
During REW SPL calibration testing it output easily up to 115dB without an issue, it was a simple RS meter test. The MiniDSP was 5dB or so louder then the Crest amp also with the same volume/output settings on my Marantz (ie switching back and forth I had 110dB vs 115dB). This is nothing new, all my pro audio amps always have less output at same AVR output levels then my consumer type amps. Its a gain structure/voltage thing (always annoying to me).
I never clipped either amp in the test although my REW measurements flatten out a great deal above 110dB, never really thought it did that....hmmmm. I will have to post the sweeps later, I have to re-run them since I didnt save (UGH!!!). I get a little nervous with the LMS5400 pushing that high, there is always slight mechanical/squeaking type of sound that always exists when pushing hard.
One thing I know is that the MiniDSP provides LOTS of power, I need to get it connected to my network now to get some DSP stuff set but that is not easy to do during testing in the HT room since I only have wireless access.
My only complaint right now was the "dinky" speaker wire connections. They remind me of RS-232 pins we buy when building cables.....really small and almost impossible to insert a 10AWG wire
I couldn't even use the "locking plastic" part because my wire was too thick. I guess I should have used 14AWG wire
I just didnt have any. I will get some and great a simple wire solution for it.
I can definitely see this amp as a nice addition to a sealed LMS5400 design.