AK380/AK370/AK170 Power Amplifier Audio Karaoke Home Theater Amplifier 2 Channel Bluetooth Class D Amplifier USB/SD AUX Input Description: AK370:(Support Bluetooth /SD Card) Note:If you want to use it as a household amplifier, you need to buy a 220V to 12V switching power adapter. Specifications: Model: AK370 Color: Balck Material: Aluminum Alloy Size: 125X75X40MM bluetooth: Support Input voltage: DC 12V/ AC 220V RMS power: 20W 20W Max power: 200W 200W Channel: 2CH Load impedance: 4-16Ω SNR: >90 db Frequency: 20Hz-20KHz Distortion rate: 0.01% Specifications: Features: -Mini HIFI digital bluetooth audio power amplifier. - Aluminum alloy body, durable, the body is made of aluminum alloy once, the anode surface treatment, the overall atmospheres, thick, feel is also very good. -for SD Card, U disk, AUX input, MP3 format play, support bluetooth wireless connection. -Supports FM stereo radio. -Low distortion supplies a clearer, stronger and more powerful sound. -With Remote control function. - Two main channel output. - The machine supports bluetooth operation, and supports line input. The power amplifier can be connected to mobile phones, computers, tablets, notebooks, MP3 players, televisions and projectors with AV audio (lotus socket) or 3.5mm headphone output holes, etc. All kinds of mobile phones on the market can be connected by Bluetooth, which can realize wireless playback. Package Included: Package Included: 1 X Power Amplifier 1 x Plug Power Cord 1 x Remote Control 1 x User's Manual