I have a big box DMM and an old red Ross flanger both of which run at 120 volts. I love the tone from both, but have always wondered if they would run quieter if they were modded to run on 9 or 18vdc. Not sure if the benefit would outweigh the cost. I saw a thread about a diy mod for the flanger, but it was a little intimidating. So do you think it's worth it or even possible to mod them? Also, any opinions on what it might do to the resale value (not planning to sell anything, but maybe someday)?