EMM Labs Switchman:
*extremely flexible
*Four 6-channel inputs
*6-channel output
*Balanced XLR or unbalanced RCA
*every input can be trimmed
*multiple setups/levels can be stored in memory
*sounds GREAT!!!
*Blows away the monitor section of ANY board
*I wish it has a headphone output!
*Not inexpensive
EMM Labs - Switchman MkII Multichannel Controller Switch