The 6100M Wakeboard Tower Audio System takes Infinity's trademark technology, performance and design to new heights with its 6000M loudspeaker pair, which attaches to a boat's wakeboard tower with swivelling, one-size-fits-all, cast-aluminium brackets includes amplifier and microphone. 2 x tower speakers 6000M speaker system specs and features: Dual 6" Polypropylene Woofers, 1" Edge-driven CMMD Tweeter, Acoustic Suspension Polymer Enclosure, Multi-mount bracket, Power Handling RMS: 150 Watts, Power Handling Peak: 450 Watts, Sensitivity: 93dB (2.83V/1m), Frequency Response: 80Hz - 20kHz, 1 x Amplifier 6100M system amplifier specs and features: High-level and low-level inputs, 6100m microphone input, Slave amplifier output, Page internal/external switch, Gain control, 125 Watts x 2 into 4 ohms, 150 Watts x 2 into 2 ohms, Frequency Response: 10Hz - 40 kHz, Signal-to-noise ratio: 91dB, Line level input sensitivity: 250mV - 6V, Speaker level input sensitivity: 6V -16V. 1 x Microphone 6100M system talk back microphone features: Page level control, Music level control, System power on/off and auto, Push-to talk button, Blue system indicator lamp, Cable and custom waterproof helm connector with boot.