This Module is currently available.
3-Channel Mixer and Amplifier Module
3-channel mixer with Burr Brown opamp at final output stage. Features independent headphone amp with level, 1⁄4” output with mute switch, and Cinemag transformer balanced XLR output.
http://analogcraftsman.com/?product=acoutput#tab-description
These merchants probably sell this module. Huh?
