Main Features:

- Can play MP3 format music from U disk and SD / MMC card directly, support FM stereo radio 
- Selected high-power four-channel professional power amplifier integrated circuits, minimal distortion but strong power 
- Amateur professional level input and operational amplifier ic for circuit design, transparent and bright sound 
- Filtering and anti-large-capacity power circuit 
- Four DSP sound field patterns 
- Two main channels and two surround channel output 
- Remote control powered by 1 x CR2025 button battery 

Specification: 
- Input voltage: DC 12V 
- Frequency response: 20Hz - 20KHz 
- Harmonic distortion: 0.05pct and less ( 4W 1KHz ) 
- SNR: 85dB 
- High control: 12dB 
- Bass control: 12dB 
- Signal level: 220MV 47K 
- FM frequency response: 87.5 - 108MHz 
- Power: 20W x 2

Model Number: HY - 400 
Special Feature: Mini,Portable,Wireless 
Product weight: 0.2500 kg 
Package weight: 0.3360 kg 
Product Size(L x W x H): 15.50 x 8.50 x 4.00 cm / 6.1 x 3.35 x 1.57 inches 
Package Size(L x W x H): 16.00 x 11.50 x 4.80 cm / 6.3 x 4.53 x 1.89 inches 
Package Contents: 1 x HY - 400 Power Amplifier, 1 x Remote Control, 1 x English User Manual