VONYXVSA700-BP Portable PA System with Wireless Microphone, Headset & Speaker Cover - 1000W Battery Powered Speaker for DJs, Karaoke & Events

Intended to use in large hall(s) for lectures. I opted for 15” speaker for quality and volume. I wanted the range of radio (rather than Bluetooth) microphone connection. Also, I required both a handheld and headset/lapel microphone. The addition of Bluetooth connection to phone, wired microphone and connection for music on a memory card was a bonus. Adjusting for echo, tone, etc.. would be useful from a music aspect and not facilities that I intend to use. It is quite heavy and so the handle and wheels were handy.My criticisms are; that both the volume and the microphone controls had to be run at maximum sensitivity to achieve results (i.e. not as powerful as suggested by its 1000W spec). Also, the microphones are fairly directional and had to be close to the mouth, which tended to give the occasional puffing effect. Possibly, this needs better positioning on my part? It should be noted that it is not waterproof. Maybe a problem if intended for external use? To maintain and avoid damage to the battery it requires regular use and monthly charging.Overall, it looks and sounds like a quality piece of equipment that did the job it was intended for.