Related Clues:

• Rock concert need
• Elec. measure
• Guitar booster
• Music booster
• Equipment for 3-Down
• Excite, with 'up'
• Unit of electricity
• Without this there might not be music to your ears
• Banjo's cousin
• Guitar blaster
• Rock band equipment
• Speaker's connection?
• Speaker's place
• It's with the band
• Sound strengthener, briefly