The JBL CSMA 180 can be your best friend if you need a compact, flexible sound system for your coffee shop, boutique or other business. Four input channels give you plenty of options for background music, with a priority channel for connecting a microphone for paging and announcements. With 80 watts of power in an amp that's stable from 4 to16 ohms, you'll have all the flexibility you need to build a dream system for your place of business. The CSMA 180 is even easy to operate when hidden away in a darkened cabinet, thanks to the illuminated rings around each dial on the front panel. The lights are signal-sensing, so each will glow green as soon as an input signal is detected. The mixer/amplifier is also compatible with remote volume control (not included) via a single RJ-45 port on the back panel.