Related Clues:
- Thing used at concerts
- Sound booster for music
- Rock band's box
- Band box, of a sort
- PA system part
- Band’s volume boosters
- A politician’s electronic device
- Sound blaster
- Volume enhancer
- Signal-boosting devices
- Lollapalooza equipment
- Bass booster
- Guitarist's sound-boosting box
- Guitar player's device
- Sound boxes for a band