FiiO

Long press the M button to enter the menu. Short press the M button to confirm and long press the M button to exit.

Short press the volume +/- button to switch menu option.

1. Filter: Digital filter setting

There are 5 different filters built in the KA15 for your preference. Filters are the sound effects born with the chip, which only has slight adjustments for the sound. Here are some introductions to some filters. These are only for reference since actual listening also has something to do with the matched device.

1.Minimum phase fast roll-off filter: neutral, medium reverb, sound thicker, partial midrange, thick warm, suitable for vocals and slower tempo music;

2.Fast roll-off, Phase-compensated filter: neutral, a small amount of reverb, restored to the natural sound, neutral tone, suitable for natural and fast music with strong sense;

3.Minimum phase slow roll-off filter: neutral, a small amount of reverb, warmer sound, more mid-range, large soundstage, suitable for orchestral and other large compositions music;

4.Slow roll-off, Phase-compensated filter: sharp, a small amount of reverb, restored to the original sound, neutral tone, detailed, suitable for favoring monitor style;

5.Non over-sampling filter: sampling rate equal to the signal frequency, with no oversampling of the signal.

2. EQ mode: EQ curve setting

EQ includes 7 preset EQs and 3 custom EQs.

The 7 preset EQ curves are Jazz, Pop, Rock, Dance, R&B, Classical and Hip-Hop.

Three custom EQs, factory default FD15, FF5, FH3.

The custom EQ can be adjusted on the FIIO Control app or web control, and the name can be changed.

3. Volume mode: Adjusting mode for current volume, with 60-level and 120-level options

4. Key mode: Current volume button mode, switchable between A and B modes

A mode:

Click  + button: volume up 1 level;

Click - button: volume down 1 level;

Long press + button 2s: switch to the previous song;

Long press - button 2s: switch to the next song.

B mode:

Click + button: switch to the previous song;

Click the - button: switch to the next song;

Long press + button: volume increase continuously;

Long press - button: volume decreases continuously.

5. DAC mode: DAC output mode setting, including ClassH and ClassAB DAC output modes

CLASS H and CLASS AB are two modes of operation of the driver within the DAC chip. The main difference is that the quiescent current of the device is somewhat different. In CLASS H mode, the quiescent current of the device will be a little lower than the CLASS AB mode, and other parameters are almost the same.

6. Channel balance: Left/Right channel output balance setting, 12 levels adjustable

7. Mic: In-line microphone switch. After disabling this option, the in-line control function in the headphone will not take effect. This setting is mainly to adapt our ASIO driver. Since the driver does not support bi-directional clock, when using the 4-pins in-line remote headphone, the output will not work properly with the driver on the computer. This setting can be used to disable the microphone and the in-line control function, in order to adapt the ASIO driver on the computer.

8. Coaxial output: SPDIF switch. After the SPDIF mode is enabled, you will get the SPDIF signal through the 3.5mm port with an adapter cable (purchased separately). Please keep this option disabled when using the analog output, such as when outputting to headphones.

9. UAC mode: Current UAC mode, switchable between 1.0 and 2.0 modes

10. Screen brightness: Screen brightness setting, 10 levels adjustable, 1 is darkest, 10 is brightest.

11. Screen rotation: Screen rotation setting.Screen can be flipped 180°.

11. Screen timeout: Setting for the time from screen on to screen off. There are 7 period of time can be selected: 15s, 30s, 1 minute, 2 minutes, 5 minutes, 10 minutes and 30 minutes .

13. Voltage/Current display: Enabled to display the current voltage and current status at the bottom of the screen

14. Theme style: Set the current theme style

15. Language: Set the system language for current operation between 简体中文 and English

16. Version: Firmware version display

17. Restore factory settings: Restore default settings