hey everyone- just picked up a pair active monitors, and am looking to build a simple passive volume control for them. Running 1/4" balanced TRS out of my interface into the monitors currently. Don't want to use the software master faders, as I'll lose the all important bit-depth of my digital audio when I have the fader dialed down... I was thinking a dp12t rotary switch(maybe more positions if possible) with matched resistors for equal reduction on each channel, however, since the signal is balanced, with a positive and inverted line per channel, things get complicated, well maybe at least to my knowledge. Am I gonna need to convert to unbalanced first, introduce the switch, and then convert back to balanced? Please tell me there's a better way to do what I want...I'd like to keep my software master faders at unity as well as my monitors.