The watts selection is for having the meter indicate wattage in real time. The needle will sway with the music. The hold designation will indicate the peak wattage reached for a given time period (10-30 seconds or so) This allows you to see what the maximum output was. I understand the Mac meters are very accurate.
mcintosh 7270 questions
just picked one up used.....What does the knob that reads "watts--hold" do?(no manual)...the knob on mine spins freely with no stop/starting point. Is it broken?....both of the VU meters don't light either-can they be turned on and off? the amp seems to work fine(haven't incorporated it into my system yet)......Can't seem to find any free info on the net...any help appreciated-thanks