I was running a 25 foot cable from my SanAmp Bass Driver to my Rumble 40 Amp and was getting a 60hz buzz (I.e. AC power) . The amp is functioning as a monitor for me and the drummer and We are also going through the “House”. I had an extra cable a little heavy-er duty that was 15 ft long which seemed to cure the buzz, but I had to reposition the amp to get the cable to reach.
I don’t think a balanced cable will work with the amp input. Could I get a 25 foot length to work with a better shielded cable or is 15 feet the limit?