Quote:
Originally Posted by BF_  Page 8 of the manual, 1/4" TS to line in. Guitars are not giving you hum as they are not powered, where your keyboard is and is evidently creating a ground loop. Try plugging both devices into the same outlet or lifting the ground on one end of the TS cable. |
if its audio hum, buy a furman it-20 series ][
or monster pro 7000 ss
if its transformer hum, then buy psaudio humbuster 3.