Radial Relay Xo Balanced AB Signal Router with Remote Switching

The Radial Relay Xo is a passive, remotely controlled audio switcher designed to route a single balanced microphone or line-level signal to two separate destinations. It serves as a practical tool for live sound engineers and performers, enabling seamless switching between different audio paths without interrupting the signal flow. Common applications include directing a vocal microphone between a main PA system and monitor mix, or sending a signal to both a dry channel for speech and an effects-enhanced channel for performance. The unit employs a completely passive 'pure wire' audio path with no transformers or electronic buffers, ensuring the signal remains uncoloured and free from added distortion. Switching is handled by military-grade gold-contact sealed relays, making it suitable for both microphone and line-level signals. It features a balanced XLR input, two balanced XLR outputs (with a ground lift on Output B), and remote control capability via either a latching or momentary footswitch connected to the combo XLR/¼-inch jack. The robust construction uses 14-gauge steel with an internal I-beam and a durable powder coat finish. The Relay Xo is particularly valuable for vocalists using in-ear monitors, allowing discreet communication with band members or technical staff. Its remote functionality and ability to link multiple units make it adaptable for complex setups. With no gain and transparent operation, it integrates easily into professional audio systems where signal integrity and flexible routing are paramount.