GMR-1.5B Marine Gauge Receiver with Bluetooth, USB, Aux

The MB Quart GMR-1.5B is a gauge mount source unit built for boats, ATVs, UTVs, and RZRs, with a 160 W internal amplifier (4 x 40 W peak) so it can power speakers directly without an outboard amp. Bluetooth handles wireless streaming with Quick-Pair, which reconnects to the last paired phone automatically at power-up, while USB and RCA aux inputs cover wired sources and iPhone or iPod control. A main control knob and nine faceplate buttons keep operation simple with gloves on, and a subwoofer RCA output stays active even when the amp is driving four speaker channels directly. Built to meet IPX67 standards, the receiver resists water, dust, and snow, so it holds up on an open boat deck or a dust-covered trail. It mounts into a standard 2.99 inch gauge hole with a 3.14 inch total mounting depth, fitting the round gauge openings common on marine dashboards and off-road vehicles. At 1.85 lb, it is light enough to add without straining a dash mount.