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With the KA15, FiiO offers a portable headphone amplifier and DAC that relies on a pair of CS43198 chips for its digital/analogue conversion, supporting a sampling rate of up to 32bit 768kHz PCM and DSD256. Amplification is provided by two SGM8262 OPAs with a maximum output power of 2x560mW at 32Ω. Furthermore, FiiO has put the emphasis on user experience, developing numerous features such as real-time power consumption adaptation and different volume control modes with adjustable steps.
The KA15 is equipped with an audiophile-grade DSP, enabling it to offer a 10-band EQ, so you can customise the frequency response of headphones, as well as export, import, share and save EQ curves. Whether you choose to use the officially recommended settings or share your settings online with other enthusiasts, it's easy to access, either through the FiiO Control application or the online version.
The KA15 also features real-time voltage and current monitoring for dynamic adjustment of power consumption. By recognising the device's playback status, the KA15 can adapt its behaviour, so if you set a timer to play your music when you go to sleep, it will automatically go to standby once the music has stopped, helping to conserve your phone's battery.
The body of the KA15 is made from CNC-machined metal, which has been anodised and polished to give a texture that is pleasant to the touch. At the centre of the body is a 0.96-inch True Color IPS screen, which displays all the important information in English or Chinese, thanks to a delightfully retro user interface with the look and feel of audio cassettes.
If you have headphones that require a lot of power to drive, you can also activate the KA15's Desktop mode to benefit from a symmetrical output power of 560mW+560mW. This ensures that it can be used even with the most power-hungry headphones.
For its digital/analogue conversion, the KA15 relies on two Cirrus Logic CS43198 DAC chips, handling signals up to PCM 32bit 768kHz and DSD256. On the amplification side, a pair of SGM8262 OPAs are used for an output power of 290mW+290mW into 16Ω Single-ended and 510mW+510mW into 16Ω Balanced.
To give you the most precise volume control possible, the KA15 offers two different control modes: a 60-step mode for quick volume up and down, and a 120-step mode for more precise adjustment. Furthermore, there are two modes of response for the + and - buttons: mode A allows volume control on a short press and switching to the next track on a long press, and mode B allows switching to the next track on a short press and volume control on a long press.
The KA15 has two headphone outputs, a balanced 4.4mm jack and a single-ended 3.5mm jack. Note that the 3.5mm jack output supports the CTIA standard, enabling microphone, playback and volume control. Finally, it is also possible to use the 3.5mm output as an SPDIF coaxial output.
The KA15 is compatible with Android, iOS, iPadOS, MacOS and Windows, so you can use it with all your devices without needing a driver. Furthermore, in order to offer the widest possible compatibility, you can also activate UAC 1.0 mode to ensure compatibility with devices such as the Switch or PS5, ensuring you can use the KA15 in every possible situation.
Thanks to the FiiO Control application available on Android and iOS, you can adjust numerous parameters such as: equalisation, channel balance, UAC mode, volume button control mode, screen brightness and time before standby (control of the KA15 is currently only supported on the Android version of the application).
Technical characteristics
Specifications | |
---|---|
Product type | Portable DAC and headphone amplifier |
DAC chips | 2x CS43198 |
OPA | 2x SGM8262 |
Input | 1x USB-C |
Outputs | 1x Jack 3.5mm single-ended headphone output 1x Jack 4.4mm balanced headphone output |
Supported sampling rate | USB : PCM up to 32bit 768kHz / DSD up to DSD256 Coaxial : PCM up to 32bit 384kHz |
Adaptive impedance | Jack 3.5mm : 16~150Ω Jack 4.4mm : 16~300Ω |
Single-ended 3.5 mm Jack output characteristics | |
---|---|
Output power | 290mW+290mW @ 16Ω 180mW+180mW @ 32Ω 19mW+19mW @ 300Ω |
Frequency response | 20Hz~20kHz ±0.1dB 20Hz~50kHz ±0.1dB |
Total harmonic distortion more noise (THD+N) | < 0.00045% (0dB, 32Ω) |
Maximum output voltage | ≥ 2.4V @32Ω, THD+N<1% |
Output impedance | < 0.8Ω |
Crosstalk | ≥ 74dB @1kHz, 32Ω |
Noise floor | 1.7μV |
Signal-to-noise ratio (SNR) | ≥ 122dB @32Ω |
Balanced 4.4 mm Jack output characteristics | |
---|---|
Output power | 510mW+510mW @ 16Ω 560mW+560mW @ 32Ω 78mW+78mW @ 300Ω |
Frequency response | 20Hz~20kHz ±0.1dB 20Hz~50kHz ±0.1dB |
Total harmonic distortion more noise (THD+N) | < 0.0004% (-4dB, 32Ω) |
Maximum output voltage | ≥ 4.2V @32Ω, THD+N<1% |
Output impedance | < 1.2Ω |
Crosstalk | ≥ 113dB @1kHz, 32Ω |
Noise floor | 3.2μV |
Signal-to-noise ratio (SNR) | ≥ 123dB @32Ω |
General | |
---|---|
Dimensions | 52 x 25 x 11mm |
Weight | 21g |
Couleur | Blue |
Package | 1x FiiO KA15 1x Leatherette protective case 1x USB-C to USB-C cable |
Input | USB |
Output | Jack 3.5mm |
Output | Jack 4.4mm |
DAC / ADC Chip | CS43198 |
Max sampling rate | 768kHz |
Max sampling rate | DSD256 |
Color | Blue |
Class | Class D / T |
Networking | No |
Remote Control | No |