Maximum

Okay I have not had much time to play with the meter but like any other shop we wanted to run it and see some amps. While only getting to test 2 amplifiers 1 is a Kenwood KAC-5206 60 RMS x 2 130 RMS Bridged. Testing on a Focal subwoofer we are only achieving 27 watts. Okay so no big deal maybe its sensitive to smaller power readings. Next amplifier up is a MMatts M600.1 USA made amplifier 1 Ohm version. Tested out at 217 Watts? This was the highest we obtained and that was at 43 Hertz. Something has to give or any advice. The Kenwood was tested on a display the MMatts was tested in a vehicle. Any help or responses would be great. Thanks.