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Russound SS-4.2 - Speaker Selector and Volume Control The Russound SS-4.2 is a premium speaker selector that allows you to switch between up to four pairs of 8-ohm speakers connected to a single stereo amplifier. Designed for high-quality audio performance, it offers reliable overload protection and long-term durability, making it ideal for both residential and commercial audio setups. Key Features Switches up to four pairs of speakers from a single source Two operating modes: Impedance Matching and Bypass Impedance Matching mode provides automatic overload protection for high-power amplifiers Bypass mode allows direct speaker switching with remote impedance-matching volume controls Compatible with bridged amplifiers and floating ground applications Spring-loaded speaker terminals accommodate up to 12 AWG wire for quick and secure connections Designed for 8-ohm loudspeakers Ten-year parts and labour warranty Specifications Shipping Dimensions 11.8" (W) x 2.5" (H) x 10.3" (D) (29.8 x 6.4 x 26.0 cm) Shipping Weight 2.5 lbs (1.1 kg) 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