I have just purchased a MiniDSP NanoAVR Dirac Live from its first owner. Before I spend money on a computer and a new UMIK-1 microphone, I want to check its compatibility with my Audiolab 8200AP. I've just read in the forums about an Audiolab owner having problems. They had an 8000AP (the predecessor to the 8200AP), which they said had a signal processing bug. Their MiniDSP worked fine with their Audiolab during actual operation but they could not carry out the initial calibration because the MiniDSP sends out a 20bit or 24bit pink noise test signal. When a MiniDSP single-channel test signal is sent through the Audiolab to the subwoofer, to the centre channel, or to one of the surround channels, the Audiolab acts as if it is receiving no signal because it is expecting stereo or multichannel, and it consequently goes into silent mode (something which it doesn't do if the signal is 16-bit). Thus the calibration cannot be carried out on anything but the front stereo speakers. The owner appeared to have had substantial correspondence both with MiniDSP and with Audiolab, and neither company could offer a fix with a firmware or software modification. I think I may have thought of a solution and I would like to check out my knowledge and logic with you guys. Am I correct to think that if I were to experience this problem with my 8200AP, I could plug the MiniDSP into my Oppo105D, and use its multichannel analog outputs into my Audiolab in order to carry out the calibration? Then, once calibration is complete, move the MiniDSP to sit between the Oppo and the Audiolab (using PCM over HDMI of course)? Thanks. PS – is ideal AV is still the best place to buy a microphone from?