Hidizs ST2 PRO

Most wired earphones still assume an analog jack or a separate dongle. Hidizs takes a different route with the ST2 PRO, a Kickstarter project that builds the DAC directly into the earphones and connects over USB-C. According to the maker, the result is a single 2-in-1 unit that works with any USB-C device.

DAC and DSP on board

The maker says the ST2 PRO uses a DAC from ESS Technology, intended to improve sound quality and reduce noise. Alongside it sits what Hidizs describes as next-generation DSP, which the company says fine-tunes sound across individual frequency ranges. Hidizs positions the earphones as capable of reproducing high-resolution digital audio with HiFi sound quality.

Controls, mic and fit

Beyond listening, the ST2 PRO is built for everyday use. According to the maker, it includes:

• Full USB-C compatibility for smartphones, tablets and laptops
• Inline controls for play/pause, volume and answering calls
• An HD microphone the maker describes as high-sensitivity, aimed at clear calls and remote meetings
• An ergonomic design intended to stay comfortable during long sessions
• A lightweight, compact build for portability

Hidizs frames the ST2 PRO as part of a broader shift from analog to digital audio as USB-C devices become the norm, and as an expression of its ambition to be a professional acoustic brand. Detailed figures such as the specific DAC chip model, supported sample rates and driver configuration are not given in the source material.