portable wireless amplifier PA-8030 Output power:100W THD:<0.1% Freauency response:50Hz 20KHz+/- 3dB Audio input:Wireless receiver/TYPE/DVD/MIC/External audio source Speaker: 1×10woofer,1×3tweeter Power and voltage:AC220V50Hz/110V/60Hz available Built-in rechargeable battery:6hours(Amplify), 4hours(TYPE/DVD) Wireless receiver:UHF700MHz 800MHz Channels:2×16 Wireless mic:collar clip/handheld mic/headset mic