ST2 PRO Nebula is a groundbreaking 2-in-1 combination of HIFI IEMs (In-ear Monitors), DAC, and DSP. It is a groundbreaking evolution in HIFI audio. The USB-C HIFI in-ear earphone integrates ESS's custom ES9281AC PRO DAC chip, combining premium DAC and DSP technologies in a true 2-in-1 innovation. The ST2 PRO delivers professional-grade audio fidelity with unmatched clarity and convenience. This revolutionary design redefines portable HIFI, offering audiophiles an extraordinary listening experience.

ST2 PRO Nebula features a high-purity, oxygen-free copper cable. This cable is renowned for its superior performance in the low and mid-range frequencies, providing rich, detailed sound reproduction with natural tonality and an expansive soundstage. The cables are durable, resilient, and lightweight, encased in tightly woven textile material. The earphone shell, crafted from German-imported Byer resin through a single moulding process, offers stability, skin-friendly comfort, and durability. Its external structure is meticulously designed for a personalised fit, ensuring long-lasting comfort for extended wear.

The ST2 PRO Nebula digital music in-ear Earphones are calibrated and tuned by the HIDIZS Acoustic Laboratory. They adhere to the H-2019 target curve for accurate audio response and offer balanced tonality, powerful bass, rich midrange, and moderate high-frequency extension. They meet Hi-Res audio standards for a Hi-Fi-Grade listening experience at an unbelievably reasonable price of just $39 for Super Early Bird and $89.99 at retail.