So with DNR (Do Not Resuscitate, right @TLS Guy ? :D), ASR sometimes uses 4V, sometimes they don't specify how many Volts?\n\nI believe if he used balanced\/XLR, it would be 4V, if unbalanced, i.e. RCA then it would be 2 V. That's Okay because in most if not all cases, the end results should be the same due to the lower gain of the balanced connections.\n\nWith IMD, which figures are more "representative " ? -5dB?\n\nI think to compare it with others such as hometheaterhifi.com, it would be around -6 dBFS but I am not too sure, and I email him for some education.\n\nBesides the usual "it depends" and "all of the above" answers, which parameters are salient when determining SOTA or "best engineering and quality " in electronics?\n\nDistortion (THD) and Noise (SNR) - and their various nomenclature?\n\nImo it would be THD+N. All else being equal IMD produces harmonics not related to the fundamental so it would be most offensive, but typically if the device has very low THD+N, IMD wouldn't be an issue either. DNR\/SNR are probably second but could be first if you have an exceptionally quiet room. The noise floor of my rooms are around 20 to 30 dB at best, so I am not going to worry much about SNR worse than 75 dB unweighted.\n\nA lot of people also measured Crosstalk and Freq Resp, but these are less important?\n\n\nI doubt too many people over 40 can hear much pass 15,000 Hz anyway so practically speaking cross talk should be more important, but then even the $300 AVRs should have much better cross talk specs than the best turntable\/cartridge\/vinyl records right?