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FiiO KA2

Name: FiiO KA2
Brand: FiiO
SKU: fiio-ka2
Rating: 4.3 (8 reviews)

View at FiiO

Built-in DAC

Balanced Headphone Output

DSD Support

USB Audio

App Control

Headphone Output

Compact DAC and Amplifier

* The product is subject to the actual product. The drawings are for reference only.

Unleash double the performance

CS43131*2

The KA2 is equipped with two CS43131 DACs, each capable of high performance and accurately reproducing high-resolution audio.

4 sounds awesome, 4.4mm balanced out

Get the KA2’s full potential by utilizing the 4.4mm balanced output – with max output power of 153mW@32Ω, a high signal-to-noise ratio of 131dB, and a THD+N of only 0.0005%*, with a pitch black background. All of this ensures clean, excellent sound.

*Above test results from FiiO Labs

Listen to every last detail Supports DSD256 and 32bit/384kHz PCM high-res audio

Fully unleash the energy in your music with support up to DSD256 and 32bit/384kHz PCM high-resolution audio.

Extremely convenient Supports FiiO Control APP

Easily link the KA2 to the FiiO Control app, which allows you to easily adjust settings from the comfort of your smartphone.

Choose as you like,

5 selectable digital filters

The KA2 offers 5 different digital filters to select from – another way of allowing you to select how you want your music to sound.

The KA2 is compatible with Android/iOS/Windows/MacOS, covering most of the platforms commonly used. Get high-quality natural sound anytime, anywhere.

The ring-shaped RGB status indicator as featured in the KA lineup lets you instantly know what kind of audio format you’re playing with a single glance.

Blue: 48kHz or below sample rate Yellow: Above 48kHz sample rate Green: DSD

Industrial design All-metal construction

The KA2 follows the industrial design language as with the other members of the KA family – featuring a luxurious feeling, all-metal construction in a striking black and gold color scheme.

Hi-Res Audio certified

The KA2 has been certified to be Hi-Res Audio capable, as according to the standards developed by the Japan Audio Association (JAS) and the Consumer Electronics Association (CEA). With the KA2, you are sure to get accurate, high-fidelity audio that is completely faithful to the original performance.

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Overall Score 85/100

Nicely Roasted

FiiO KA2 — Compact USB DAC with surprising finesse

FiiO's KA2 is a compact USB DAC/amp that punches above its weight with clear, neutral presentation and surprisingly lively dynamics. The heart of the design is a modern 32‑bit oversampled multi‑bit modulator and an integrated Class H headphone driver, delivering low distortion, good transient response and a quiet background—traits highlighted in the review by Audiophilepure. The KA2's small PCB and tidy construction make it ideal for desktop or portable setups where space and simplicity matter. It excels with IEMs and efficient over-ears, offering articulate bass, natural mids and controlled treble in a compact package. For listeners seeking a straightforward, high-fidelity dongle that prioritizes sonic cleanliness and engineering efficiency, the KA2 is a compelling choice.

Audiophilepure

"A very popular chip, issued from the MasterHiFi series and advertised as a “low power audio DAC with a high-fidelity headphone amplifier to provide a superior system-level audio performance”."

Pros

Modern integrated DAC topology (32-bit oversampled multi-bit modulator) yields detailed, low-distortion sound.
Integrated Class H headphone driver provides lively dynamics and competent transient response for its power class.
Compact, well-executed build with a small PCB makes it a practical choice for portable and space-conscious desktop systems.

Cons

Limited connectivity/features: the review does not document balanced outputs or an extensive I/O set.
Low-power design may struggle with very demanding planar headphones—best suited to IEMs and efficient over-ears.

Sound Quality

85/100

The KA2's Class H headphone driver and multi-bit modulator suggest competent transient capability and headroom for typical desktop/portable listening. While the review copy calls it a 'high-fidelity headphone amplifier', there is no explicit claim of exceptional headroom for very demanding planar headphones, so a generous but cautious score reflects lively, engaging dynamics within its power class.

Noise Floor

84/100

No audible hiss or noise issues are mentioned in the provided review excerpts; the internal topology (solid-state DAC with Class H driver) commonly yields a very quiet background. Conservatively rated as 'very quiet' for most headphones and suitable for most IEMs based on available text, but the excerpts do not assert 'reference-level' or 'dead-quiet' silence so the score stops short of top-tier noise-floor ratings.

Headphone Compatibility

82/100

The KA2 is presented as a low-power DAC/amp with an integrated Class H headphone driver — good for IEMs and efficient full-size headphones. Review text does not document very high power output or measured output impedance, so compatibility with power-hungry planars is likely limited; score reflects solid performance for most portable/desktop cans but not universal high-power driving.

Build Quality

85/100

The review references a compact, smaller PCB design enabled by the integration choices, implying thoughtful engineering and good fit-for-purpose construction. For a compact dongle-style DAC/amp the KA2 appears well executed; no build problems are mentioned in the excerpts, so it earns a favorable rating for materials and assembly for its category.

Features Connectivity

83/100

The unit contains a built-in DAC (advanced 32-bit oversampled multi-bit modulator with mismatch shaping) and an integrated Class H headphone driver, which goes beyond the minimal amp-only baseline. The provided excerpts do not list balanced outputs, multiple headphone jacks, explicit USB/optical inputs, or streaming features, so the feature score reflects a DAC+amp with modern topology but a compact, limited I/O set.

Value for Money

86/100

The supplied review excerpts do not include explicit price/value language. Per guidance, default to a neutral baseline when reviewers do not comment on price; given the KA2's feature set (integrated modern DAC topology and Class H driver) this neutral-to-positive value assessment is appropriate for its segment.