RDL ST-SSR1 Line-Level Audio Switch, 2x1

Deliver seamless, professional audio switching where silence and reliability matter most. The Radio Design Labs ST-SSR1 Line-Level Audio Switch provides silent, relay-free selection between two balanced line-level inputs to a single balanced output, making it ideal for AV racks, security, surveillance and monitoring installations. With programmable fast or soft switching, the ST-SSR1 can act as an instantaneous mute for critical feeds or perform gentle transitions to avoid listener fatigue. Control requires less than 0.5 mA at the TRIG terminal, so it integrates easily with open-collector logic, remote controls (D-RC2ST, D-RT2) and automated control systems. The module’s compact US-made housing and adherence to RDL performance standards ensure dependable operation in pro audio and physical security deployments. Use the ST-SSR1 to route live mic feeds, alternate background music sources, or to silently switch alarm and monitoring audio paths without mechanical wear. Add the ST-SSR1 to your next AV, monitoring or surveillance project to improve audio quality and system reliability.

• Silent, relay-free switching to eliminate clicks and pops for clean audio in AV, security and surveillance systems
• Select between two balanced line-level sources or use as a silent on/off switch for flexible routing
• Programmable fast or soft switching to support muting or smooth transitions in monitoring and broadcast applications
• Ultra-low control current (<0.5 mA) enables simple integration with logic, remote controls (D-RC2ST, D-RT2) and building management systems
• Compact, durable Radio Design Labs housing fits tight installations and reduces maintenance compared with mechanical relays