FiiO KA1 Portable DAC & Headphone Amplifier (Lightning / USB-C)
A compact yet powerful amp DAC. Available for USB-C or iOS devices with lightning connector!
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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.
Made with robust "heart", for maximum effect
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.
High-end decoding, immensely capable
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.
Also supports MQA
The KA1 has been officially certified by MQS 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 service or media players) and complete the final unfold of an MQA file.
Charmingly colourful, RGB status indicator
The RGB status indicator not only features captivating looks, but also conveniently displays the current audio format and sampling rate.
General Specifications
| Name/Model | KA1 |
| hardware | DAC: ES9281AC PRO |
| weight | About 10g |
| firmware upgrade | The system firmware can be upgraded through USB |
| channel balance |
<0.05dB(32Ω/THD+N<1%) |
| The highest supported sampling rate | 384KHz/32bit |
| sample rate indication |
blue: below 48kHz yellow: above 48kHz Green: DSD Magenta: MQA |
| impedance adaptation |
16 to 300 Ω |
| Support DSD | DSD64/128/256 |
Audio Parameters
| output power | 43mW (16Ω,THD+N<1%) |
| 45mW (32Ω,THD+N<1%) | |
| 13mW (300Ω,THD+N<1%) | |
| 6.8mW(600Ω,THD+N<1%) | |
| frequency response | 20Hz to 20KHz, the curve amplitude varies by 0.1dB. |
| 20Hz to 50KHz, the curve amplitude varies by 0.3dB. | |
| Noise Floor | <2.4uV(A calculation) |
| output amplitude | 1.2V(32Ω/THD+N<1%) |
| channel separation | ≥ 73dB(1Khz,32 Ω load) |
| signal-to-noise ratio | ≥ 114dB(32 Ω A) |
| distortion plus noise floor | <0.0005%(32 Ω A) |
| <0.00018%(600 Ω A) | |
| output impedance | <1.5 Ω (load 32 Ω) |
