I’ve spent some time characterizing a Hypex NCx500 amp, using the load discussed on the associated wiki page and also using some of the new plug-ins. This amp and the ~3 kW Behringer have been the primary amps used to test the plug-ins at higher power levels.
Hopefully the attached is useful, and I’ll correct typos and add to it as needed.
Measuring the NCx500.pdf (1.3 MB)