Related Clues:
- Audio boosters, briefly
- Rock guitarists' plug-ins
- Fender connection
- Rock concert array
- Bit of band gear
- ___ up (increase)
- Equilateral triangle, for one
- Sound-boosting boxes
- Concert blaster
- Electric guitarist's need
- Sound booster, for short
- Current measures start to annoy politicians
- Electricity unit (abbr.)
- Bit of gig gear
- Fuse measures