Related Clues:

• Intensify, with ''up''
• Fuse rating
• Concert item
• Band boxes
• Items on a concert stage
• Electrical units, for short
• Rock-concert need
• Rock blasters
• Electrical unit, briefly
• Accelerate, with ''up''
• Stereo component
• Sound projectors
• Roadie gear
• Music boosters?
• MTV show that played electronica