The ZA100 rack-mountable 3 zone public address amplifier offers users with an easy and convenient solution for public announcement, relay and other commercial applications. Input is achieved via three combo jacks for microphones plus two line-level input channels. Line input 1 accepts RCA and 1/4" connectors while line 2 accepts RCA and 1/8" mini-stereo jacks. Onboard USB playback allows users to play audio directly from USB flash drives, while built-in chime alert and announcement tones enable for quick and easy emergency talkback. A battery terminal allows the unit to be operational for emergency use even in the event of power loss. Offering 100 Watts split between three zones, the ZA100 is one of the most flexible yet powerful public address amplifiers available in today's commercial/installation pro audio market.