1 x HiFi Amplifier. Speaker impedance：4-8Ω. Input impedance：47kOhm. Sound Amplifier AK270 20WX2 Mini Hifi Digital Audio Amplifier 12V 3A Channel 2.0. Input port：USB/RCA、Bluetooth. Distortion rate：<4%.
1 x HiFi Amplifier. 300W Bluetooth Amplifier LED Powerful Hifi Stereo Amplifier, 2.1 Channels LP-T1. Speaker impedance：4-8Ω. Input impedance：47kOhm. USB Bluetooth Amplifier LED Powerful Hifi Stereo Amplifier, 2.1 Channels LP-288.
Plug and Play! Ultra portable and light weight design at just 3 ounces. The speaker is ultra small & portable and yet able to exert high quality sound. Color available in Black. Engineered for exceptional clarity of sound.