Seulliya SeuAa200502 USB-C to 3.5mm Aux Cable, MFi, 2-Pack

At 39.6 inches, the Seulliya SeuAa200502 connects a USB-C device to a standard 3.5mm audio jack or AUX input. Use it to play audio through a car stereo, home stereo, speaker, or wired headphones, with a direct cable connection instead of a separate adapter. The two-cable pack also gives you the option to keep one in the car and another at home.

It supports audio transmission up to 24-bit/96 kHz and is designed for plug-and-play use, so there is no software or driver installation involved.

What to know

One end connects to a compatible USB-C device, the other connects to audio equipment with a standard 3.5mm jack or AUX-in port. That makes the cable useful for listening from a phone through a car sound system, or connecting a compatible tablet or laptop to speakers or headphones. It meets MFi certification requirements and includes a DAC chip for audio output.

The listed compatible devices include iPhone 15 and 16 models, Samsung Galaxy S20 through S23 series, select Google Pixel phones, iPad Pro, and MacBook Pro models. The compatibility list also names other devices, including some Huawei phones. Check that your device has USB-C and that the audio equipment has a 3.5mm input before connecting.

Would a cable be simpler than adding a separate dongle to your audio setup? This model combines the USB-C connection and 3.5mm plug in one cord, making it a straightforward option for a compatible phone-to-stereo or phone-to-headphones connection.

How to use it

Connect the USB-C end to your device and the 3.5mm end to the car stereo, speaker, headphones, or other equipment with a matching audio input. The connection is designed to work without installing software or setting up a driver. For a car listening setup, plug the 3.5mm end into the stereo’s AUX input, at home, use the same connection with a compatible speaker or headphones. The cable is intended for indoor use, and actual maximum audio output depends on the connected headphones.

Getting the most from it

Use the two cables to keep a connection ready where you listen most, such as in the car and beside a home stereo. If you prefer a single cable over a separate adapter, its USB-C-to-3.5mm format keeps the connection direct while supporting a range of listed phones and audio devices. The 39.6-inch length provides a cord for connecting nearby equipment without making the setup wireless.

Buyers’ comments on sound and cord length are mixed: some describe clear sound and a suitable length, while others report a less favorable sound experience or find the cord shorter than expected. Their feedback can help set expectations, while the stated device and audio-jack compatibility remains the practical starting point for choosing a connection.

Should you buy it?

A solid pick if you want a direct wired way to connect a compatible USB-C phone, tablet, or computer to a 3.5mm car stereo, speaker, or headphones. The MFi certification requirements, plug-and-play design, support for up to 24-bit/96 kHz audio, and two-cable pack make it a useful fit for everyday listening across compatible setups.