Check the listing for details. Rockville ROCK MATRIX 4 Zone 70 Volt Commercial Amplifier+Matrix Source Routing. Color: Black, Condition: Used. Listed at 235.25 USD. Car Audio & VideoPro AudioMarine AudioLighting Karaoke Home/Portable Audio Rockville ROCK MATRIX 4 Zone 70 Volt Commercial Amplifier+Matrix Source Routing --> Click Thumbnails to Enlarge Condition and Warranty Condition: SLIGHTLY USED TESTED TO BE PERFECTLY FUNCTIONAL,IN GOOD COSMETIC CONDITION MAY HAVE MINOR SCRATCHES Warranty: 1 YEAR AUDIOSAVINGS Product Description How to Set Up Your Rock Matrix 4 (Commercial Use): What's in the Box: Matrix Amplifier Remote Detachable Rack mount ears Power Cable Owner’s manual Warranty Description: Multi Source / Multi Zone Matrix Routing The Rock Matrix 4 is a 4 zone commercial amplifier that allows you to route any source to a specific zone(s) and also route any microphone input to a specific zone(s). For example, you can play Bluetooth on zones 1 and 2 and route microphone 1 to zones 1 and 2 while playing something in Zone 3 using an RCA input, and playing something else in zone 4 using the ¼” input. You can also route the other mic input to whichever zones you want. Power and Flexibility Each zone has 5 sets of speaker terminals depending on what kind of speakers you have. You can use 70 volt, 100 volt, 16 ohm, 8 ohm, and 4 ohm. No matter what you will get 110 watts RMS per channel. That is 440 watts of total RMS power. For example, you can have (2) 8 ohm speakers on zone 1, (30) 70 volt speakers on zone 2, 16 ohm speakers on zone 3, etc. Lots of input options This model gives you Bluetooth, USB, SD, (2) Sets RCA AUX inputs, (4) XLR Mic inputs, (2) 1/4" TS inputs, (4) ¼” TRS LINE outputs (one per zone), Fire input, and a Siren input. There is also a backup DC24V power input in case of a power outage. Flexible controls The controls are really easy to use. You can easily route any source to any zone(s) and select the volume levels for that zone. There is bass and treble EQ controls to customize the sound. There is also a built in 1 watt speaker that allows you to drop in onto any zone and listen to the music playing. Safety first The built-in clipping limiter function protects your speakers and the amp from overheating. For further protection, there is also a cooling system in this amplifier that will keep the components running cool making the amplifier durable and reliable. There is a Fire input and a Siren input. This allows you to easily integrate a fire alarm and play a pre-recorded message that will override any music playing in case of an emergency. There is also a backup DC24V power input that allows you to connect a backup 24V battery that will kick in and power the unit in case of a power outage. Features: Rockville ROCK MATRIX 4 Zone 70 Volt Commercial Amplifier 440 Watts Total RMS @ less than 1 % THD (110 Watts RMS per zone x 4 Zones) Route Any Sources to Any Zones 4 separate zone output and you can route any source to any zone and also route a microphone input to specific zone(s) Supports multi zone installations using 70 volt, 100 volt, 16 ohm, 8 ohm, and 4 ohm speaker set ups 4 line/mic inputs (2 of the mic inputs have selectable phantom power for condenser mics) 19" rack mountable (removable rack brackets) Built in 1w monitor speaker allows you to listen to playback on any zone 100 volt RMS Power: 4 x 110 Watts RMS 70 volt RMS Power: 4 x 110 Watts RMS 4 ohm RMS power: 4 x 110 Watts RMS 8 ohm RMS power: 4 x 110 Watts RMS 16 ohm RMS power: 4 x 110 Watts RMS Built in Bluetooth 5.0 chip allows audio streaming with matrix assigning to any zone(s) USB input to play audio stored on a thumb drive with matrix assigning to any zone(s) (32gb max) SD card slot to play music stored on an SD Card with matrix assigning to any zone(s) (32gb max) Separate volume control for MIC1/LINE1, MIC2/LINE2, MIC3/Line3,MIC4/LINE4/MP3 inputs BASS and Tremble controls Built in limiter and clipping indicator MIC 1 priority button will lower the music when talking into the mic when priority is activated 6 segments signal level indication (-10dB, -6dB, -3dB, 0dB, limit, clip) Built in fan cooling system keeps component cool at all times Built in ¼” fire input will override the system when activated in case of emergencies Siren output allows you to connect a siren that would get activated in case of an emergency Emergency DC 24V input terminals allow you to connect a 24V battery to power the amp in case of a power outage Inputs and Outputs: (2) Sets RCA AUX inputs (4) XLR Mic inputs (2) 1/4" TS inputs (4) ¼” TRS LINE outputs (one per zone) (allows you to add another amplifier or a powered sub to any zone that needs more speakers/subs) Fire input Siren input Each zone has speaker output terminals with options for 4 ohm, 8 ohm, 16 ohm, 70v, 100v output Specifications: Distortion: Signal to Noise Ratio (@ 4ohm output 1w)---65dB Signal to Noise Ratio (@ 4ohm output 100w)---83dB Power Requirements: 120V / 50-60Hz or DC24v Frequency Response vs THD + N (Worst case, across normal bandwidth 1w @ 8ohm) :