Posts on DAC measurements should adhere to the following guidelines. (Note: Atomicbob can do whatever he wants on the dScope) Basic Information Recommended: Include picture of amp Recommended: Description of switches, options Recommended: Picture of inputs and outputs Baseline Measurements Required: 1kHz spectrum -1dBR (from full scale) 48k sampling, linear 0-24k Required:1kHz spectrum -90 dBR 48k sampling, linear 0-24k Recommended: 1kHz spectrum -60 dBR 48k sampling, linear 0-24k Required:1kHz spectrum -1dBr 48k sampling, linear 0-1.1k Required:19k + 20k (1:1 -1dbR) -1dBr 48k sampling, linear 0-24k Required:19.1kHz -1dBr 192k sampling, linear 0-85k (44.1k playback) Recommended: PN white noise. Wide band view to note extension and nature of filter slope. -4 dBR 192k sampling, linear 0-85k (44.1k playback) Optional Measurements 700 and 1700Hz two tone -1dBr 48k sampling, log 0-24k Impulse response 1khz -90dbfs waveform 16 bits make sure software is not dithering 1khz -90dbfs waveform 24 bits Jitter JTEST 44.1k. Please describe output (Windows settings, software used, PCM, nature of signal, sampling rate, etc.) and audio input settings.