The Sonifex RB-MS4x3 is a passive analog audio splitter designed for professional use in broadcast, studio, and live sound environments. It enables you to split four mono balanced line-level inputs into three separate outputs per channel without requiring any power supply. This makes it ideal for critical routing tasks where reliability and audio integrity are essential.
With transformer-isolated outputs, this unit provides exceptional signal protection and minimal crosstalk. The Sonifex RB-MS4x3 features high-quality XLR connectors in a compact 1U half-rack chassis, making it perfect for use in tight rack spaces, OB vans, and portable systems. Whether you need to distribute feeds to multiple recorders or send clean, noise-free signals to backup systems, this analog XLR audio splitter delivers.
Built in the UK to professional standards, the Sonifex RB-MS4x3 is trusted by engineers across broadcasting and AV industries. Its plug-and-play operation and passive design make it a dependable choice for complex signal chains.
Features
✅ 4 mono balanced line-level inputs
✅ 3 transformer-isolated outputs per channel
✅ Professional XLR connections
✅ Passive operation – no power needed
✅ Clean, transparent analog audio distribution
✅ 1U half-width rackmount metal chassis
✅ Ideal for broadcast, studio, live, and OB use
✅ Built in the UK with rugged, high-spec components
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