Massive Audio Since 1999, Massive Audio has produced high quality car and pro audio products. Massive Audio laid its roots in high quality audio reproduction through in-house engineering and a dedication to customers. Peak Output Power @ 14.4V : 480W x 1 MAX 4 Ohm RMS : 120W x 2 Input Level : 0.2~9.0v Freq. Response : 10Hz~25KHz Bass Boost : N/A Minimum Load : 2 Ohm Stereo Gain Remote : N/A Dimension : 1.6"H x 4.25"W x 7.80"L TRIDENT SERIES CAR AND MARINE AMPLIFIER TX2 - 120W x 2 @ 4 Ohm RMS Massive Audio Trident Series Amplifiers with Bluetooth Audio Streaming come dressed in a black anodized brushed aluminum heat-sink with stainless-steel end caps and blue backlit logo. Circuit boards are treated with Dura-Coated 320°F Epoxy for water resistance. TX2 supports a "Docking Port" to plug in an optional Railcap Booster (RCLX) or (RCT). Extreme Power in a Mini Compact Footprint Conformal Dura-Coated 320°F Epoxy PC Boards to resist Moisture, Dust and Extreme Heat Full Range Digital Design. 4 Layers PCB design with SMD parts Built-in Noise Reduction Circuitry. Full MOSFET with High Grade Switching Devices Bluetooth Audio Streaming with optional UBT1 Dongle. Advanced 5 Way Protection Circuitry Built-in Auto Sensing Turn On Function (Hi-Inputs) 12V Remote Output for External Devices (Hi-Inputs) RCLX ~ Railcap Booster (Optional). World Wide Standards Compliant (RoHS, E-Mark, CTA-2006, CE) IP65 Tested and Approved. Bluetooth Plugin IP65 Tested and Approved Marine Grade Amplifiers with Plugin for Optional UBT Sata Dongle for bluetooth audio streaming. Full MOSFET with High Grade Switching Devices The MOSFET (Metal Oxide Semiconductor Field Effect Transistor) transistor is a semiconductor device which is widely used for switching and amplifying electronic signals in the electronic devices. Built-In Auto Sensing Turn On Function (Hi-Inputs Speakers Level Only) When use HI-INPUT, the amp can detect the DC OFFSET from the high level input signal to auto turn on/off, when the amp turns on, the REM terminal will output + 12V DC to control the other device turn ON/OFF. REM IN: When use low level input. The amp REM IN should be connected to REM OUT of the source unit. The head unit controls the amp turn on/off. Built-in Noise Reduction Circuitry Helps to reduce the total noise of the circuit.