DIY Distortion Analyzer/Analysis?

[H713]

The Cordell distortion magnifier is a pretty good tool. With modern op-amps that same idea, plus a halfway-decent sound card should have no problems measuring the distortion of even a SOTA power amplifier.

Alternatively, here's an interesting option:
https://e1dashz.wixsite.com/index/cosmos

 

[diyralf]

If you don't want to build something yourself, then the QuantAsylum QA40x is currently the best device with the best price-performance ratio. Above all, the measured values are displayed well and the whole level controlling works. Even Bob Cordell uses the box.

 

[H713]

The QA403 is a great device, but the chip shortage has made getting one nearly impossible.

 

[CG]

The Cordell distortion magnifier is a pretty good tool. With modern op-amps that same idea, plus a halfway-decent sound card should have no problems measuring the distortion of even a SOTA power amplifier.

Alternatively, here's an interesting option:
https://e1dashz.wixsite.com/index/cosmos

I've had very good results with a Topping D10s and the Cosmos ADC, with an Autoranger in between.

This post is what inspired me to purchase the D10s: PMA Measurement system

 

[DualTriode]

The QA403 is a great device, but the chip shortage has made getting one nearly impossible.

Back in production next week.

Thanks DT