Having noise issues I bought this thing to plug my macbook pro on it, my mic preamp, compressor, EQ, my Kemper, Boss Katana, and pretty much everything to get clean power, hoping I'd get rid of noise problems. But absolutely nothing has changed. I emailed them with a sample but they said the machine is not designed to do this. I thought it would filter eventual power issues that cause noises. Very disapointed with this unit and apparently I'm not the only one.