ES9281AC PRO DAC | RGB status indicator | Full support for a variety of devices
MQA rendering support | Supports 32bit/384kHz lossless audio | Supports DSD256


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

Compact Portable DAC and Amplifier


The RGB status indicator not only features captivating looks, but also conveniently displays the current audio format and sampling rate.

Charmingly colorful, RGB status indicator

Blue:48kHz or below sampling rate

Yellow:Greater than 48kHz sampling rate
Green:DSD tracks
Magenta:MQA rendering

Compact stature
Massive potential

What can be accomplished in a tiny space of 40x15x8mm? In the KA1, there is not only a high-quality DAC, but there is also premium audio amplification to match, both carefully tuned by engineers to truly and faithfully reproduce your music the way it was meant to be heard. The KA1 invites you to listen to it among other portable DAC and amps.

With support up to 32bit/384kHz PCM and DSD256, you will surely be able to hear even the finest details within your music!
*DoP mode supports up to DSD128, Native mode supports up to DSD256

High-end decoding
Immensely capable

Employed in the KA1 is the ES9281AC PRO chip from ESS, which combines USB audio interface, DAC, and amplifier into one package. When combined with the multi-layered HDI gold-plated PCB it is on, the result is lower crosstalk, higher efficiency through lower power consumption, and ultimately high quality pure sound. 

Made with a robust “heart”, for maximum effect


Also supports MQA

The KA1 has been officially certified by MQA to be truly capable of MQA rendering! 
*The KA1 includes MQA Renderer technology, which can connect to an MQA Core signal (from TIDAL streaming service, FiiO Music App or any other MQA enabled music services or media players) and complete the final unfold of an MQA file.

Android/iOS/Windows/Mac compatible
Smartphone/portable player/tablet/computer supported
Portable/commuting/office/home/gaming uses all supported


Versatility with multi-platform support

supports 3.5mm single-ended/4.4 balanced dual-output interface, one machine meets multiple requirements

Balancing single-ended dual-output

Specification parameters