Below is an outline of what your measurements should look like (more or less) in ARTA. I'm guessing most will be trying to use ARTA. It does have some quirks. Marv, feel free to add this to Posting Standards as an example. BASELINE 1kHz spectrum -1dBR (from full scale) 48k sampling, linear 0-24k 1kHz spectrum -90 dBR 48k sampling, linear 0-24k 1kHz spectrum -60 dBR 48k sampling, linear 0-24k 1kHz spectrum -1dBr 48k sampling, linear 0-1.1k 19k + 20k (1:1 -1dbR) -1dBr 48k sampling, linear 0-24k 19.1kHz -1dBr 192k sampling, linear 0-85k PN white noise. Wide band view to note extension and nature of filter slope. -4 dBR 192k sampling, linear 0-85k [Does not function with ARTA loopback since A/D and D/A are synced to the same sample rate. A/D ideally needs to be 2x the D/A sample rate to get useful information here] OPTIONAL 700 and 1700Hz two tone -1dBr 48k sampling, log 0-24k Impulse response [Does not work in ARTA] 1khz -90dbfs waveform 16 bits make sure software is not dithering [No option in ARTA] 1khz -90dbfs waveform 24 bits [No option in ARTA] Jitter JTEST 48k. Please describe output (Windows settings, software used, PCM, nature of signal, sampling rate, etc.) and audio input settings. NOTE: For multi-tone measurements, I don't see anyway to set to -1dBFS. It defaults to -6dBFS.