audio-sound @ hatena

An audio review & news blog. The volume should not exceed 80 dB is recommended. I usually adhere to the safe-listening style by WHO. Please note that my aural impressions and interpretations of measurements are also made from a safe-listening style.

(News) Audirect Atom Mini: ES9280AC PRO Chip HiFi Portable USB DAC Amplifier

Audirect Atom Mini

Audirect Atom Mini


Audirect has released the Audirect Atom Mini, a small dongle amplifier.



  • ESS ES928OAC Pro Professional Audio DAC Chip
  • Wide Compatibility
  • Lightweight & Compact
  • Plug and Play
  • Smart Indicator Light



  • DAC Chip: ESS ES928OAC Pro
  • Sampling: 32-bit/768kHz
  • Frequency Response: 0.032dB@20Hz-40kHz
  • Distortion + noise (THD+N): 0.0004%
  • SNR: -117dB
  • Support DSD Specification: up to DSD512
  • Output Port: 3.5mm SE



ESS ES928OAC Pro Professional Audio DAC Chip

The ESS ES928OAC Pro independent audio decoder chip produced by the global audio chip manufacturer ESS supports up to PCM/DXD (32-bit/768kHz), with an independent operational amplifier chip and advanced crystal oscillator, designed to achieve 117 dB DNR and 0.0004% THD+N Provide first-class audio performance. Let mobile phones/computers/game consoles also be able to HiFi up. Stable control of Calorific Value with lower power consumption, presenting you an excellent warm sound.



Wide Compatibility

It supports mainstream streaming media player software, compatible with many music apps, supports up to768kHz sampling rate.


Lightweight & Compact

Build with an 8g lightweight body, Audirect atom mini is an ideal amplifier for daily use and you can take it anywhere, almost cannot feel its existence.



Plug and Play

The Audirect atom mini has no built-in battery and requires no charging. It can be used when connected to a phone or computer with type c/Lightning interface. The low-power design provides a better experience.


Smart Indicator Light

The prompt light on the body will change color according to the decoded decoding rate.
Red: 44.1/48kHz PCM
Blue: 88kHz-384kHz PCM
Green: 705kHz-768kHz PCM
Yellow: DoP
White: DSD Native


Price & Availability

Audirect Atom Mini is priced at $39.99. it is available at Linsoul and other locations.


Audirect Atom Mini

Audirect Atom Mini

Audirect Atom Mini