dx7pro+

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    Measuring DX7 Pro+ using Cosmos ADC, or Why You Shouldn't Blindly Trust SINAD Scores

    My Cosmos ADC is A-grade and set to 3.5 Vrms. All RMAA measurements are 24/192KHz. TLDR: The THD performance of DX7 Pro+ is great at -1.0dBFS but worse at -1.2dBFS. All ESS DACs have this "oscillating THD" issue (see https://archimago.blogspot.com/2022/07/hi-res-thdn-vs-output-level.html)...
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    Topping DX7 Pro+ vs Chord DAVE measurements (Cosmos ADC) - DAVE is better in some areas (surprise!)

    So I bought DX7 Pro+ out of curiosity and measured it using Cosmos ADC (grade A). Note: Here Cosmos ADC is in stereo mode so the noise is not the best. But I care more about harmonic distortions :) My Cosmos APU will arrive tomorrow and then I will measure them again. THD of DX7 Pro+: THD of...
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