Related Clues:

• Item of concern in a sound check
• Sound booster at a concert
• Rock booster
• Equipment for Coldplay
• They're at all the big concerts
• Arena blaster
• Gear to help you hear
• Roadie's armful
• Concert load
• It's for the Byrds?
• Concert boosters
• Measure of electric current
• Bits of current
• Band buy
• It pumps up the volume, for short