Niles MSA-10A multi-zone speaker selection & amplifier matching system. High-quality unit used for distributing audio from one amplifier to multiple rooms or speaker zones. Great for whole-home audio, commercial spaces, or upgrading an existing system. Features: • Controls up to 10 speaker zones • Individual on/off switches for each room • Built-in impedance matching to protect your amplifier • Heavy-duty construction (classic Niles quality) • Rear panel wiring block for easy install • Front room labels: Kids Room, Bedroom, M Bath, Living, Family, Patio, Jacuzzi, etc. Unit shows normal cosmetic wear but should work great. Perfect for home theaters, restaurants, offices, or anyone who wants centralized audio control.