DS18 Marine Headunit TFT Screen - 3 Zones - 4V Output - Bluetooth - RDS 4x50 Watts [MRX300]Marine Headunit TFT Screen 3 Zones 4V Output Bluetooth RDS 4x50 Watts DS18s MRX300 is the ultimate control center for ANY marine audio system. Offering 3 independent audio zones with separate volume and tone controls, and a 2 band EQ (Bass and Treble): the MRX300 lets users fine tune audio to any preference. With features like an AM FM tuner with RDS Weather Alert Radio, and 37 radio presets, including 18 FM, 12 AM, and 7 WB channels: users gain easy