The 240 Watt A-724 is built with proven TOA quality and reliability—part of the TOA 700 Series of Mixer/ Amplifiers that offer versatile features and outstanding value for installed sound applications. Its features include 6 mic/line inputs, 2 auxiliary line inputs and a 900-Series module port. Each mic / line input includes a mic trim control and 23VDC phantom power. Speaker outputs consist of 70.7V, 25V and 4Ω. An auxiliary line output can be used for recording or connection to an external booster amplifier. An Auto-Mute function provides voice-activated priority override. You can assign inputs to activate or respond to the muting function with rear panel DIP switches. Muting can also be activated with an external switch-closure. Other features include channel and master volume controls, bass/treble, processor insert jacks and output level meter. Master volume and power on/off can also be controlled remotely. Short-circuit and thermal protection circuitry ensures extended operation. Applications: Boardrooms Educational facilities Houses of worship Includes:Accessory AC power cord (2m) x1Removable terminal plug (3-pin) x6Removable terminal plug (4-pin) x1Removable terminal plug (6-pin) x1Volume control cover x4Features:9-channel integrated mixer / amplifier for paging and background / foreground music distributionWide frequency response, very low noise and distortion, and excellent output . "Please serious Buyers"!!! "musical synthesizers trade or drum machines are acceptable" please serious buyers!!! Thank You!! "Hablo Español tambien"