The Grundig GX-33 Digital Media Receiver is a single din mechless headunit that gives you full control and connectivity of your digital media sources. This model features Bluetooth with external microphone for hands-free calls & wireless music streaming, AM/FM Radio Tuner, USB, SD and AUX inputs. Sound quality is superb with a built in 40W x 4 amplifier and 7 Band Pre-set EQ, an amplifier can also be added to the system via the 2V/2CH Rear Pre-Out.