Related Clues:

• Signal booster
• Roadie's tote
• Speaker booster
• Signal enhancer
• Hi-fi component
• Sound system unit
• Stereo component
• Audiophile's gizmo
• Signal strengthener
• Rocker's gizmo
• Part of a sound system
• Radio signal booster
• Stereo system component, for short
• Part of a studio system
• Recording studio device