Features:
1. DC 12V power supply for cars and motorcycles.
2. Treble/bass/volume controls.
3. CD-DVD-MP3 input.
4. On/Off control.
5. Two main channel outputs.
6. Professional operational amplifier IC with level input for circuit design, sound, transparent, bright.
7. Four electronic keyboard controls make it easier for you to operate the amplifier.
8. Use integrated high-performance four-channel power amplifier circuit with low distortion and high power.
9. Filtering and high performance circuits.
10. Four sound field modes of the DSP.

Specification:
Jack input: standard stereo jack
Input voltage: DC 12V
Output power: RMS 2 x 20W 1KHz
Frequency response : 20Hz - 20kHz
Signal-to-noise ratio: 85 decibels
High control: 12dB +/- 10KHz
Bass control: 12dB ± 100Hz
Signal level: 220MV 47K
Material : Aluminum alloy case
Voltage: DC 12V 2A or more
Connector: 2.1*5.5mm
Material: Aluminum alloy
Special features: Support USB, MP3, FM, , DVD
Product size (length x width x height): approx. 12.50*7.00*4.00 cm/4.92*2.76*1.57 inch
Package size (length x Width x Height): approx. 13.00 * 10.00 * 4.50 cm / 5.12 * 3.94 * 1.77 inches
Color: Blue, Red (optional)

Package list:
1 * HY - 2001 car amplifier
1 * English user manual