I love my QA401 and I have just received my 402. I’m anxious to test it out and put it into place for my reviews.
One step that’s very time-consuming in testing amplifiers is to adjust the signal generator or amplifier sensitivity controls to reach a target measurement. For example, I take CTA-2006C-compliant S/N Ratio and THD measurements at 1 watt into 4 Ohms, so I work as hard as I can to set the output to 2.00 volts. Likewise, power measurements are taken at 1.0 THD+N - which requires more fine-tuning. I’m probably overly concerned with the accuracy, but I never want to be called-out for rushing my reviews.
I know the process would be difficult, but being able to have the software auto-set the signal generator to reach a target measurement or level would be amazing.