Rockville CAR-EQ-OKE is a 2 DIN 7 Band Car Audio Equalizer EQ with Microphone Input and Echo and Bluetooth. Stream audio from any smartphone or other Bluetooth enabled device with high quality and no distortion. Use the microphone input to talk or sing through your car stereo with adjustable volume and echo effect, perfect for karaoke. Customize your sound with 7 adjustable bands of equalization, ranging from 50Hz to 12KHz, each adjustable from -12dB to +12dB. The built in crossover and subwoofer level controls give you even more control over your audio experience.