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Compact white USB-C to 3.5 mm TRRS audio dongle 127 mm

STARTECH

STARTECH USBCAUDIO2 USB-C to 3.5mm TRRS audio adapter 127mm

SKU CH-903F-KEKYK MPN USBCAUDIO2

Connects a 3.5 mm TRRS headset to a USB-C or Thunderbolt port, delivering 16, 24 or 32-bit stereo playback at up to 384 kHz with 105 dB SNR and a 94 dB SNR microphone input via a Realtek ALC4030U

  • Add wired headset support to USB-C devices with TRRS jack for stereo and mic
  • High-quality audio via 32-bit DAC at up to 384kHz with 105dBA SNR
  • Clear microphone capture through stereo ADC at 94dB SNR and 48kHz 16-bit
  • Universal driverless compatibility across Windows, macOS, Linux, iOS and Android
  • Compact 127mm portable design with flexible TPE jacket for on-the-go use

Compact USB-C audio adapter for headsets

This 127mm dongle adds a 3.5mm TRRS jack to USB-C or Thunderbolt devices, supporting stereo output and microphone input. It is aimed at professionals who need wired headsets for calls or recording on laptops, phones or tablets without a native audio port.

Check your device and headset before ordering

The host must provide a USB-C or Thunderbolt port with audio accessory support; not all USB-C ports carry analogue signals. Your headset must use a single 3.5mm TRRS plug with in-line controls if you require remote volume or mute functions.

Durable TPE cable and driverless operation

A flexible TPE jacket with soft-touch finish resists tangling during daily carry. The Realtek ALC4030U chipset delivers 32-bit DAC playback at up to 384kHz with 105dBA SNR and 16-bit ADC capture at 48kHz with 94dB SNR, all without installing drivers on any major operating system.

How it compares

Measured against everything we stock in Audio Jack & RCA Adapters, at today’s prices. Recalculated every night.

Price $22.99
Pricier than about 70% of the 1,324 comparable items (median $16.99).

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Specifications

Product
Brand nameStarTech
Size & build
Shipping weight0.45 kg
Package size25 × 25 × 25 mm

Questions about this item

What cables or accessories are included with the USBCAUDIO2 and what must I provide?

The adapter itself is the only item supplied; you provide a USB-C or Thunderbolt host and a 3.5mm TRRS headset or headphones.

The spec lists 16, 24 and 32-bit playback — which one should I expect in daily use?

The DAC handles 16, 24 and 32-bit samples at 44.1 to 384kHz; your source file and OS decide which depth is actually sent.

The headline 105dBA SNR looks high — what does that mean when I plug in a headset?

105dBA SNR on the output and 94dB on the microphone input give low-noise playback and clear voice capture for calls or recording.

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