Alpine IDA-X300 car stereo receiver.

Power Output: 4 x 45W High Power Amplifier
24bit DA Converter
Display: White LCD (14 Segment x 8, 2-line)
Control Type: Rotary Encoder Knob
Face Color: Gunmetal/Black
Illumination Buttons: Green
PreOut: 1
AUX-In: via Full Speed
Steering Wheel Control: Ready
Detachable Face Plate
Dimmer Input
Power Antenna Output
Amplifier Remote Turn-On Output
Audio Interrupt Input
Mute: Built-in Audio Mute
Remote Control Ready

Sound Tuning
Subwoofer Level Adjustment: -15dB to 0dB (1dB steps)
Bass Center Frequency: 60/80/100/200Hz (Selectable)
Bass Band Width Adjustment (Q): 4 choices (1 =wide, 4 =narrow)
Bass Level Control Range: +/-14dB at 100Hz
Treble Center Frequency: 10k/12.5k/15k/17.5kHz (Selectable)
Treble Level Control Range: +/-14dB at 10kHz
High Pass Filter: 80/120/160Hz (Selectable)