The Crescendo is a portable personal communicator that can used with or without hearing aids.
The Crescendo picks up the sound via the internal microphone and with the volume and tone controls you can set your own sound and tone levels. You can use your own neckloop, headphones or direct input lead with Crescendo amplifier. By changing the switch setting the you can listen to a loop system i.e. in a church or theatre. The power is provided by two AA batteries.