The Pioneer DEH-X3750UI is a single-DIN car audio receiver featuring a detachable front panel. A maximum power output of 50W x 4 is delivered via MOSFET amplification, complemented by an FM/AM tuner with memory for 24 stations. Media playback is supported for CDs, CD-R, CD-RW, and digital formats including MP3, WMA, FLAC, and WAV. Connectivity on the front panel consists of a USB port for drives and smartphones, as well as an AUX-in port. The unit is equipped with a 2-line VA LCD display and button illumination customizable with 210,000 colors. Audio customization is handled via a 5-band graphic equalizer, high pass and low pass filters, and two RCA pre-amplifier outputs. Additional functions include the MIXTRAX program, automatic volume attenuation, and support for the Russian language.