Description
FiiO KA1 USB Amp/DAC (Open Box)
Compact Portable DAC and Amplifier
ES9281AC PRO DAC | RGB status indicator | Full support for a variety of devices MQA rendering support | Supports 32bit/384kHz lossless audio | Supports DSD256
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.
Made with a 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 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.
Charmingly colorful, RGB status indicator
The RGB status indicator not only features captivating looks, but also conveniently displays the current audio format and sampling rate.
blue- 48kHz or below sampling rate
yellow- Greater than 48kHz sampling rate
green- DSD tracks
purple- MQA rendering
Versatility with multi-platform support
- Android/iOS/Windows/Mac compatible
- Smartphone/portable player/tablet/computer supported
- Portable/commuting/office/home/gaming uses all supported
General specifications |
|||
| Name/Model | KA1 | color | Classic Black/Dark Night Green |
| hardware | DAC: ES9281AC PRO | FiiO Control | is not supported. |
| weight | About 10g | size |
fuselage: about 40mm x 15mm x 8mm Line length: 70mm |
| Audio input interface | Type-C Cable or Lightning | Headset output interface | 3.5mm socket |
| firmware upgrade | The system firmware can be upgraded through USB | sample rate indication |
blue: below 48kHz yellow: above 48kHz Green: DSD Purple: MQA |
| channel balance |
<0.05dB(32Ω/THD+N<1%) |
impedance adaptation |
16 to 300 Ω |
| The highest supported sampling rate | 384KHz/32bit | Support DSD | DSD64/128/256 |
power supply parameters |
|||
| power supply | battery capacity | ||
Audio parameters |
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| Headset Output Part Performance Parameters (3.5mm) | |||
| output power | 43mW (16Ω,THD+N<1%) | output amplitude | 1.2V(32Ω/THD+N<1%) |
| 45mW (32Ω,THD+N<1%) | channel separation | ≥ 73dB(1Khz,32 Ω load) | |
| 13mW (300Ω,THD+N<1%) | |||
| 6.8mW(600Ω,THD+N<1%) | output impedance | <1.5 Ω (load 32 Ω) | |
| frequency response | 20Hz to 20KHz, the curve amplitude varies by 0.1dB. | signal-to-noise ratio | ≥ 114dB(32 Ω A) |
| 20Hz to 50KHz, the curve amplitude varies by 0.3dB. | distortion plus bottom noise | <0.0005%(32 Ω A) | |
| bottom noise | <2.4uV(A calculation) | <0.00018%(600 Ω A) | |
Comparison
| Model |
KA1 |
KA2 |
KA3 |
|
color |
Classic Black/Dark Night Green |
Classic Black |
Classic Black |
|
DAC |
ES9281AC PRO |
CT7601+CS43131*2 |
CT7601 + ES9038Q2M + RT6863D * 2 |
|
FiiO Control |
is not supported. |
support |
support |
|
weight |
About 10g |
About 12.3g |
Approximately 17.5g |
|
size |
fuselage: about 40mm x 15mm x 8mm Line length: 70mm |
fuselage: about 40mm x 15mm x 12mm. Line length: 70mm |
About 56.3mm x 20.2mm x 12mm |
|
Headset Input Interface |
Type-C Cable or Lightning |
Type-C Cable or Lightning |
Type-C lines |
|
Headset output interface |
3.5mm single end |
4.4mm balance |
3.5mm Single End (PO)+4.4mm Balance (BAL) |
|
Sample Rate Indicator |
blue: 48kHz and below yellow: above 48kHz Green: DSD magenta: MQA |
blue: 48kHz and below yellow: above 48kHz Green: DSD |
blue: 48kHz and below yellow: above 48kHz Green: DSD |
|
Decoding specifications |
PCM: 384KHz/32bit DSD: Dop 64/128 Native 64/128/256 MQA:16x |
PCM: 384KHz/32bit DSD: Dop 64/128/256 Native 64/128/256 |
PCM: 768KHz/32bit DSD: Dop 64/128/256 Native 64/128/256/512 |
|
output amplitude |
PO:1.2V(32Ω/THD+N<1%) |
BAL:1.2V(32Ω/THD+N<1%) |
PO: 2V(32Ω/THD+N<1%) BAL:2.7V(32Ω/THD+N<1%) |
|
output power |
45mW@32Ω(PO) |
153mW@32Ω(PO) |
130mW@32Ω(PO) 235mW@32Ω(BAL) |
|
distortion + bottom noise |
<0.0005%(32 Ω A) |
<0.00036%(32 Ω) <0.00024%(32 Ω A) |
<0.0008%(PO 32Ω) <0.0010% (BAL 32Ω) |
|
signal-to-noise ratio |
≥ 114dB(32 Ω A) |
≥ 125dB(32 Ω A) ≥ 131dB(600 Ω A) |
≥ 122dB (PO32 Ω A) ≥ 119dB(BAL 32 Ω A) |
|
power consumption |
50mA (standby) 60mA( 40mV) |
65mA (standby) 70mA( 40mV) |
120mA (standby) 130mA(PO 40mV) 130mA(BAL 40mV) |
