$950 · Coleman Audio M3PH MKIII Passive Monitor Controller

This is a high end, passive monitor switcher and controller that won't colour your sound and only takes up one rack unit. Switch between up to 4 stereo sources and 3 pairs of speakers. Alternatively, speaker 3 can be set to drive VU meters. Separate mutes for both left and right speakers, a mono sum, phase reverse and volume control. There is also a built in headphone amp with separate volume control. Power is only needed when using the headphone amp. All connections are on XLR male and female connectors. This unit is hard to find at a decent price. There is an earlier version on Reverb right now going for $1450.