Power amplifier type HIFI power amplifier. Channel 2.1 power amplifier, can connect 2 speakers and a subwoofer. Audio output Cable speaker jacks+subwoofer. 🎁 1 x Power Amplifier. 🚀Compact Size: Complete design with exquisite appearance, matt silver case looks fashionable and durable, unique structure design easy to be installed in car / marine, save space and convenient to operate.