Best Wireless Microphone Systems for auditoriums

One wireless channel is easy. The trouble starts at four, when the frequencies have to coexist with each other, with the assisted-listening transmitter, and with whatever the local TV stations are doing this year. A system that scanned clean in an empty room on Tuesday can crackle in a full one on Sunday, because bodies absorb RF and a full room is a different room.

For a venue run by volunteers, the practical requirement is a system that scans and assigns frequencies itself, and shows charge state where somebody will actually look. Rechargeable packs with a dock beat alkalines the week someone forgets to buy batteries, which is every week eventually.