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Russound SS-4.2 4 Pair Single Source Impedance Matching Speaker Selector (SS42)
Model #: SS42|UPC #: 612934520679
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The SS-4.2 allows you to switch up to four speaker pairs connected to a stereo amplifier. Offering high-quality audio performance, it also provides overload protection and long-term reliability.

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$ 159.00

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The SS-4.2 offers two operating configurations: Impedance Matching and Bypass. Impedance-matching mode provides automatic overload protection for use even with high-power amplifiers. This mode allows multiple pairs of speakers to be safely connected to an amplifier using the built-in automatic impedance-matching circuitry.

Bypass mode is used for direct speaker switching with remote impedance-matching volume controls. This allows local control in each room as well as higher efficiency; however, in this mode the impedance matching and overload protection are not engaged.

Designed for use with 8-ohm loudspeakers, the SS-4.2 also provides safe connection to bridged amplifiers and even works in applications where there is a floating ground. It has spring-loaded speaker terminals for quick connection and can accommodate speaker wire up to 12 gauge.


• Designed for high audio quality and long-term reliability
• Provide impedance matching and automatic overload protection compatible with high-power amplifiers
• Bypass mode allows direct speaker switching when using remote impedance-matching volume controls
• Ten-year parts and labour warranty


Connector(s): Spring terminals
Frequency Response: 20 Hz – 20 kHz +/- 0 db
Max Wire Size: 12 AWG (2.4 mm)
Power Handling: 100 watts per channel peak, 100 watts per channel RMS
  • Product Parts Warranty: 10 Year Limited
  • Product Labour Warranty: 10 Year Limited

Russound SS-4.2 4 Pair Single Source Impedance Matching Speaker Selector (SS42)