Wired IEM beltpack / headphone amp, with balanced XLR inputs and 3.5mm headphone output
Wired IEM packs take the line level output from a mixing desk, and amplify it to a suitable strength to drive headphones or earbuds. They are a good low cost alternative to wireless in-ear monitor systems, and are ideal for players that don't move around much, like drummers or keyboardists.
Each pack runs on a 9v battery (included with the hire) which means no trailing adaptors. They can accept a mono or stereo signal, with balanced XLR connectors and an auxiliary minijack input for backing music or click tracks.
Sound quality is excellent and the beltpack itself is lightweight and easy to handle.