Mic input DEFINATELY MONO. A stereo input jack will not work.

On the subject of break music, like Scott, I do not use any vocals and seldom anything I recorded. Depending on the room and the dynamics I use several different playlists that are grouped into genres such as medium tempo big band swing, BB King type blues, George Benson type jazz, Bob Marley Reggae (no vocal), slow to medium tempo dixie, 60's-70's style ballads...and even a set of Techno and Hip Hop (just in case but, so far used only once at an anniversary party that had ALL ages).

Volume on break music is set below live, playing volume and is intentionally designed as background conversation music rather than foreground dance music.

Some employers prefer no break music between sets.
Eddie