Audirect Atom 4 Portable Dual Amp & DAC

The Audirect Atom 4 redefines mobile high-fidelity audio by packing desktop-grade architecture into an ultra-compact, driverless format. Designed specifically for audiophiles who refuse to compromise sound quality while on the move, this pocket powerhouse transforms your everyday smartphone, tablet, or laptop into a premium digital audio source.As seen in the visual layout, the Atom 4 features an ultra-clean, minimalist gray metal chassis that eliminates dangling cables by connecting directly to your device via a gold-plated Type-C plug. On the opposite side, it securely mounts dual audio outputs to accommodate multiple setups seamlessly.

Key Features

High-Performance ESS9281AC PRO Decoding

At the absolute core of the Atom 4 is the premium ESS9281AC PRO independent audio decoding chip. This advanced processor effortlessly handles native PCM streams up to 32-bit/768kHz and DSD512 files without downsampling. It extracts extreme micro-details from your lossless tracks, maintaining absolute studio-master precision with zero compression.

Dual RT6863C Operational Amplifiers

While typical entry-level dongles rely solely on low-power integrated chip amplification, the Atom 4 utilizes a robust two-stage amplification circuit. Driven by dual RT6863C high-current operational amplifiers, the device delivers an impressive voltage and current drive. It can grip demanding multi-driver IEMs or high-impedance headphones firmly, serving up tighter bass response and clean, energetic transients.

True Balanced & Single-Ended Outputs

Whether you run standard or professional gear, the Atom 4 has you covered. It includes a 3.5mm single-ended output delivering up to 2Vrms, alongside a true balanced 4.4mm output pushing a massive 4.2Vrms. The balanced architecture drastically decreases channel cross-talk, significantly lowers total harmonic distortion, and widens the soundstage to give your music a true three-dimensional feel.

Optimized Power Domain Separation

Internal electrical noise is the enemy of high-end audio signals. Audirect addresses this by meticulously laying out the internal circuit board with independent analog and digital power domains. By entirely isolating the DAC block, signal pathways, and high-current power layers, the Atom 4 achieves a black background with a vanishingly low noise floor.

Ultra-Portable 19-Gram Architecture

Constructed from a lightweight copper-zinc alloy shell, the device feels highly premium yet weighs only 19 grams. Because it does not contain an internal battery, it operates via plug-and-play efficiency with incredibly low power draw from your host device, making it perfect for daily commutes, work sessions, or travel.

Why Buy from HiFi Heaven?

Securing authentic audiophile gear requires a source you can trust. By purchasing the Audirect Atom 4 directly from HiFi Heaven, you are guaranteed a 100% genuine product backed by an official manufacturer warranty. We prioritize the Bangladeshi audiophile community, offering swift delivery across the country, safe packaging, and dedicated post-purchase customer support to keep your audio journey running smoothly. Check out our latest collections over at HiFi Heaven to complete your ultimate portable rig.

Technical Specifications