The QA401 is our second generation of audio analyzer--the follow-on product to the QA400.
The QA401 can operate standalone, or in concert with the QA450 Programmable Load as shown in the video below. Combined, these two products can automate much of the testing your high-power amplifier might need during production.
The QA401 software runs on Windows 10, and makes it easy to quickly perform gain, level and distortion measurements. Its isolated differential inputs and outputs ensure ground loops between the measurement PC and your design can't interfere with the measurement accuracy.
The QA401 can be automated using Microsoft's DotNet tools, making it a snap to customize measurements or integrate with other test equipment.