OSD Audio ISS4 4-Zone Speaker Selector Switch with Built-in Impedance Protection for Multi-Room Home Audio Systems
OSD Audio ISS4 4-zone speaker selector in a 16-gauge steel case with removable screw-down connectors and switchable impedance protection. Handles 140W per channel, or 70W with protection on.
Price range: See on Amazon
What we liked
- + 16-gauge steel housing with black powder coat and a low profile that fits a cabinet or rack shelf
- + Removable phoenix connectors with screw-down terminals make wiring easier and hold speaker wire firmly
- + Selectable impedance protection lets one amplifier drive several speaker pairs, with an on/off selector per zone
Trade-offs
- - No per-zone volume knobs, unlike the selector it replaces in this guide: zones are only switched on or off
- - Limited to 70W per channel when the protection circuit is engaged
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