Features:
4 channels output digital audio power amplifier.
With 3.5mm & RCA & USB & SD input interfaces.
Support 3 modes (USB, AUX, FM) converting freely.
With VOLUME, TREBLE and BASS adjusting knobs.  
Remote controller and display screen for convenient usage.
Made of aluminum alloy, lightweight and durable.

Specifications:
Color: Red
Material: Aluminum Alloy
Output Power: 4 * 25W 4Ω 1KHz
Bass/ Treble Control: ±10db
Frequency Response: 20Hz-20KHz
Total Harmonic Distortion: ＜ 0.5%
Signal to Noise Ration: ≥ 85dB
FM: 87.5MHZ-108MHZ
The Signal Level: 220MV 47K
Input Voltage: DC 12V 5A
Item Size: 16.5 * 15 * 5cm / 6.5 * 5.9 * 2in
Item Weight: 520g / 1.2lb
Package Size: 27.5 * 21.5 * 6cm / 10.8 * 8.5 * 2.4in
Package Weight: 610g / 1.3lb

Note:
Power adapter is not included.

Package List:
1 * Power Amplifier
1 * Remote Controller