AK170:
Features:
Made of fine quality material, long-lasting to use.
Mini HiFi audio po-wer-amplifier.
Low distortion provides a clearer and stronger sound.
It has 2 main channel output.

AK370:
Features:
Made of fine quality material, long-lasting to use.
It is a mini HiFi audio po-wer-amplifier.
Suitable for S-D-card, U disk, AUX input, MP3 format play, support BT wir*e-less connection.
Low distortion provides a clearer and stronger sound.
It supports FM stereo ra-dio.
It has 2 main channel output.
Comes with a remote control.
Supports BT operation and line input.

Specifications:
Item type: Music Receiver
Material: Aluminum alloy
Color: Black
Input voltage: D-C12V
RMS p-ower: 20W+20W
Max p-ower: 200W+200W
Channel: 2CH
Load impedance: 4-16Ω
SNR: >90 db
Frequency: 20Hz-20KHz
Distortion rate: 0.01%
Package weight: 190g/6.7ounces
Package size: 140*120*50mm/5.51*4.72*1.96inches