Astell&Kern AK HC5 – Flagship-Grade Portable USB DAC/Amp with AK4499EX

The Astell&Kern AK HC5 brings the company’s flagship DAC architecture into an ultra-compact USB DAC/amp. Featuring the AK4191EQ processor paired with the flagship AK4499EX DAC, the HC5 delivers desktop-class resolution, exceptional driving power and remarkably low noise in a pocketable form. With 3.5 mm single-ended and 4.4 mm balanced outputs, DAR upsampling and advanced noise-suppression technology, it brings premium A&K sound to any device — available at Soundium.

Key Features

• Flagship AKM DAC system: Dual-stage AK4191EQ + AK4499EX architecture separates digital and analog processing for cleaner, more detailed sound.
• High Driving Mode: Borrowed from A&K’s SP4000, the HC5’s optimized amp stage delivers powerful, controlled output far beyond typical USB dongles.
• DAR upsampling: Digital Audio Remaster technology increases sample rate for more refined detail, broader dynamics and a lifelike, natural presentation.
• Dual noise-shielded cable: Tinned-copper conductors and a braided outer shield minimize interference for consistent, low-noise playback.
• Extensive compatibility: UAC 1.0 and 2.0 support ensures smooth use with mobile devices, computers and even gaming consoles like PlayStation and Nintendo Switch.
• Balanced and unbalanced outputs: 3.5 mm SE and 4.4 mm balanced jacks provide clean, powerful output for all headphone types.

Customer Benefits

The AK HC5 gives listeners a portable upgrade that rivals full-size DAC/amps. Its powerful amp section easily drives demanding headphones, while its quiet background and refined tuning make it ideal for IEMs. DAR upsampling enhances detail for high-resolution listening on the go, and universal USB compatibility lets you enjoy premium audio from phones, tablets, laptops or consoles. Compact, durable and beautifully engineered, it elevates everyday listening without adding bulk.

Quick Specs

• DAC: AKM AK4191EQ + AK4499EX
• Outputs: 3.5 mm unbalanced (2.5 Vrms), 4.4 mm balanced (5 Vrms)
• Sample rates: PCM 8 kHz–768 kHz; DSD64/128/256/512 (native)
• SNR: 121 dB SE, 125 dB BAL
• THD+N: 0.0005% SE / 0.0004% BAL @ 1 kHz
• Crosstalk: −139 dB SE / −141 dB BAL
• Output impedance: 0.5 Ω SE, 1.1 Ω BAL
• Dimensions: 3.2 × 6.43 × 1.6 cm
• Weight: 46 g
• Input: USB-C
• Modes: UAC 1.0 / UAC 2.0

What’s in the Box

• Astell&Kern AK HC5 DAC/amp
• USB-C cable (integrated)
• User documentation

Use Cases / Ideal For

Perfect for high-resolution listening from mobile devices, laptops and tablets; gaming on consoles via UAC 1.0; powering demanding headphones; and achieving flagship-level sound in a compact portable setup.

Pros & Cons

✅ Pros:

• Flagship AK4499EX DAC in portable form
• Excellent driving power and dynamic range
• Ultra-low noise and distortion
• DAR upsampling enhances detail and realism
• Highly compatible with mobile, PC and consoles

⚠️ Cons:

• Short cable inherent to dongle-style DACs
• High performance may reveal flaws in low-quality recordings
• Draws power from the host device

The Astell&Kern AK HC5 delivers true flagship-grade digital audio in a pocket-sized DAC/amp, offering rich power, exquisite detail and advanced noise control for pristine listening anywhere. Available at Soundium.