Audio cable Unitek C19021BK03 — 2× RCA (Cinch) to 3.5 mm TRS jack, 1.5 m

Unitek C19021BK03 is a 1.5 m audio cable that connects devices with a 3.5 mm TRS headphone output to stereo systems, amplifiers or powered speakers with two RCA (Cinch) inputs. The cable offers a straightforward analog connection for music playback and line-level signals, enabling audio from smartphones, tablets, laptops or portable players to be routed into home audio equipment or professional inputs that accept RCA connectors.

Advantages

The cable provides a compact and low-effort way to link portable devices to RCA-equipped audio systems without adapters. With a 3.5 mm TRS plug on one end and two RCA plugs on the other, it preserves stereo separation and delivers unbalanced analog audio with minimal setup. Its 1.5 m length offers moderate reach suitable for typical home and office arrangements while remaining easy to route and store.

Suitable for

• Connecting smartphones, tablets and laptops to home stereos or active speakers with RCA inputs
• Feeding portable music players into amplifiers, receivers or mixers for playback
• Linking computer sound output to stereo systems for improved audio quality compared with built-in speakers
• Temporary connections for presentations or small audio setups where a wired line-level signal is required

When it may not be suitable

This cable carries an unbalanced analog signal and is not intended for professional balanced audio applications or long-distance runs where noise and interference may become significant. It also does not support digital audio formats, microphone-level signals, or inline controls and remote features found on some headphone cables.

Key specifications

• Connector A: 3.5 mm TRS stereo jack (male)
• Connector B: 2 × RCA (Cinch) plugs (male)
• Cable length: 1.5 m
• Signal type: unbalanced analog stereo, line-level
• Typical use: consumer audio connections between portable devices and RCA inputs

How to use

Insert the 3.5 mm TRS plug into the headphone or line output of your source device and connect the red and white RCA plugs to the corresponding right and left inputs on the amplifier, receiver or powered speakers. Set the source and amplifier volumes to low before connecting, then power on and gradually increase volume to the desired listening level. For best results, ensure connectors are fully seated and cables are routed away from power cords or other sources of interference.

What to consider before purchase

• Ensure the source device has a 3.5 mm stereo output and the target equipment has RCA inputs
• Confirm that a 1.5 m cable length is sufficient for your setup and placement of devices
• Check whether you need a balanced connection or digital audio instead of an unbalanced analog cable

Usage recommendations

Use the cable for short to moderate runs in domestic or small-office environments. If interference is noticed, try changing cable routing or reducing cable length. For longer distances or professional gear, consider balanced XLR/TS solutions or digital connections.