The Russound SS-4.2 is a single-source speaker selector for distributing one stereo amplifier to up to four rooms or speaker zones. Each pair gets its own front-panel switch, so listeners can turn areas on and off without touching the amplifier. A rear-panel switch chooses how the unit handles amplifier loading. With internal impedance matching engaged, the selector keeps the combined load within a safe range and adds automatic overload protection, which makes it a good partner for higher-powered receivers and amplifiers. In bypass mode the SS-4.2 acts as a straight switcher, intended for installs where each room already has an impedance-matching volume control on the wall; this gives local level control and better efficiency, but the selector's own matching and protection are off. The unit is built for 8-ohm speakers, uses spring-loaded terminals for wire up to 12 gauge, and its isolated inputs allow connection to bridged amplifiers or amps with a floating ground. Russound backs it with a ten-year parts and labor warranty.
Key Features
- Four speaker-pair outputs from one stereo source
- Selectable IN (impedance matching) or BYPASS operation
- Overload protection that resets automatically after the amp is switched off
- Spring terminals, 16-12 AWG
- Ten-year parts and labor warranty (per Russound)
Ideal Applications
Adding patio, kitchen, den and bedroom speakers to a single stereo receiver; simple whole-house background audio; replacing an older A/B switch when a system grows beyond two zones.
Compatibility
Feed it from the A / Speaker 1 output of a stereo amplifier or receiver. In IN mode Russound calls for a 4-ohm-stable amplifier; in BYPASS mode a 4 to 8-ohm-stable amplifier may be used with impedance-matching volume controls such as the Russound ALT-126R. Designed for 8-ohm speakers.
In the Box
Speaker selector and a non-adhesive room label sheet; labels slide into the groove above each front-panel switch.