CQ-BPEM1 is a great control unit for some one looking for all the necessities in a small compact unit that can be mounted on a wall, tucked away in a cabinet, or mounted on a stand next to a stationary bike. Just add a power strip and extension cables to either a hidden amplifier and speaker set-up or directly to powered speakers for a complete Fitness Sound System for any size room. If sound control is needed you can add an optional Trigger LM-30 for sound monitoring with a 15 db ‘audio slap‘ temporary ducking for the music should the class get too loud.