Remember this guys - this isn't designed JUST to sit on a bench and test amps. Picture this, you wheel it out to a customer's car, run the dyno on his "1000w" amp (while still in his trunk). It might very well be a 1000w amp, but he used a LONG run of 4ga and a shitty ground. He benches, in his car, @ 732 watts and system pulled down to 12.3v (from 14). So you sell him (and/or) install some nice 1/0 and maybe a proper alternator. Re-Bench it. Now he has 1024w . (example). So a failed dyno run will not ALWAYS be about the brand, but about the install and this tool will help you fix it and PROVE your changes made a difference.