Related Clues:

• Concert gadgets
• Equipment for 3-Down
• Excite, with 'up'
• Unit of electricity
• Without this there might not be music to your ears
• Guitar blaster
• Sound boosters
• Rock band equipment
• Speaker's connection?
• Units of current
• Sound projectors?
• Rock band's gear
• Speaker's place
• It's with the band
• Sound strengthener, briefly