Related Clues:

• Elec. current unit
• Concert piece
• Gear on stage
• Touring band's equipment
• Tour gear
• Transmitter component
• Volume enhancers
• Excite, with "up"
• Builds (up)
• Small amount of juice?
• Electric guitar attachments
• Some sound equipment
• Turn (up), as intensity
• Rock concert needs
• Concert boxes?