Is there a mixer on the market that has similar features to the discontinued M367, M267, or M67?
Consider these alternatives:
Shure SCM268 mixer - four mic/aux inputs and one aux only input
Shure SCM800 mixer - eight mic/line inputs and one aux only input
Professional Sound ProMix-6 mixer
Studio Technologies 740, or 742, or 750 mixer
Sound Devices field mixers