Adapter Procab VC101 — RCA (female) to XLR (female) audio adapter

Procab VC101 is a passive audio adapter that converts a female RCA (cinch) connector to a female XLR connector. It allows connection of consumer-level unbalanced RCA outputs to professional balanced XLR inputs when pin wiring and grounding are compatible. The adapter is intended for basic signal routing, test setups, and connecting legacy audio devices in studio, live sound, or AV installation environments.

Advantages

The adapter provides a compact and mechanically robust solution for interfacing RCA sources with XLR inputs without requiring active electronics or external power. Its passive design preserves signal integrity for short cable runs and reduces the need for cable re-termination or custom harnesses. The female-to-female configuration simplifies temporary connections and equipment testing while maintaining standard connector form factors used in professional audio.

Suitable for

• Connecting consumer audio players or legacy devices to professional mixers or preamps
• Short test and measurement setups in studio or service environments
• Temporary patching in live sound and AV installations where grounding is compatible

Key specifications

• Connector A: RCA (female)
• Connector B: XLR (female), 3-pin
• Design: Passive, no active circuitry
• Signal type: Intended for unbalanced RCA to balanced XLR interfacing when wiring allows
• Applications: Line-level audio connections, patching, and testing

How to use

Insert the RCA plug from the source device into the RCA (female) side of the adapter and connect the XLR (female) side to an XLR male input on the destination device using a standard XLR cable. Verify that the destination input is compatible with an unbalanced signal or that the system’s grounding and pin wiring are configured to accept the conversion without introducing hum or phase issues. Use short cable runs where possible to minimize noise pickup since the adapter is passive and does not provide isolation or impedance conversion.

Usage recommendations

For reliable operation, use the adapter for short, non-critical runs and in situations where level and ground compatibility are known. Avoid relying on this passive adapter for long cable runs, matching impedance, or converting between unbalanced and fully differential balanced signals; in those cases, use a dedicated DI box or active converter. Inspect connectors for secure mechanical fit and avoid excessive strain on cables to prevent connector damage.