HIDIZS ST2 PRO Review -Jose Vazquez

Introduction

Hidizs is on the bandwagon of combining IEMS with a DSP cable with an integrated DAC-AMP that replaces the audio connector. With today's technology of reducing converter and amplifier devices, it is easy to combine these tasks. This time, it has an integrated microphone and is a more universal DAC/AMP, with 2Pin 0.78mm and MMCX terminations. As Hidizs comments, this cable was born as a response to the limitations of the Bluetooth system in terms of power, high resolution audio, better sound quality, compatibility with many more devices without the need of a Bluetooth emitter, etc. 

The Hidizs ST2 PRO Nebula cable has the ES9281AC PRO DAC chip, with a power of 70 mW at 32 Ω, a sensitivity of 108 dB and a very low distortion of only 0.0012 %. The advantages are obvious: higher power, zero latency, wider bandwidth (20 Hz-40 kHz), 32-bit resolution and support for PCM formats up to 384 kHz and native 64/128 DSD.

...... ......

Sound

The Hidizs ST2 Pro are a cable-integrated DAC/AMP assembly plus IEMS with a classic V-profile. According to the website, their profile is aligned with the H-2019 target audience. In my opinion, the ST2 Pro's enhance more mid bass and less sub bass. It is also more noticeable in V, with a more sunken midrange and a somewhat steeper rise towards the treble. Then there is a slight area of control in the first treble and an extension that pales in the air area.

Overall, the set is somewhat more emphasized in the bass, with that wide curve in the low area. That's why I've looked for some tips to lower the lower zone and favor the clarity of the whole.

...... ......

Conclusion

I think Hidizs has joined the new trend of USB DSP cables with integrated DAC/AMP. As smartphones move away from supplying 3.5mm audio output, this new set will become more relevant, especially if the integrated DAC/AMP is as adequate as the ES9281AC PRO. The cable includes a microphone and a control button, so it is all-in-one and can be used with any mobile device. The cable can be purchased individually with 2-pin 0.78mm or MMCX interface and is compatible with any IEM on the market that incorporates these connection interfaces.

In this review, the cable is accompanied by IEMS with a V-profile. These are very lightweight capsules, with a dual dynamic driver with a 10mm PU+PEEK composite diaphragm. Their sound is characterized by punchy bass, warm and smooth mids, and bright and energetic highs. The starting price has been set at $39, and on the second pass it will be $49. For that price, the set is excellent.

BUY NOW: HIDIZS ST2 PRO Nebula

To view the full article, please click here.