1. Úvod
The FiiO K5 Pro is a high-performance desktop Digital-to-Analog Converter (DAC) and headphone amplifier designed to elevate your audio experience. It features advanced decoding capabilities and a robust amplifikace stage, making it suitable for a wide range of headphones and audio setups. This manual provides detailed instructions for setting up, operating, and maintaining your K5 Pro.

Figure 1: FiiO K5 Pro Desktop DAC and Headphone Ampdoživotní
2. Vlastnosti produktu
- High-Performance DAC & USB Decoding: Equipped with an ES9038PRO DAC chip for 32-bit processing and an XUF208 USB decoding chip, supporting up to 768kHz and DSD512 inputs.
- Všestranné vstupy: Supports Coaxial, Optical, and RCA line-in inputs. Optical and Coaxial inputs support up to 192kHz.
- Více výstupů: Features a 6.35mm (1/4 inch) headphone output and RCA line-out outputs. The RCA line-out signal is adjustable up to 2Vrms, allowing connection to active speakers or external ampzáchranáři.
- Výkonná sluchátka Ampzvedání: Delivers up to 1.5W of total power output into a 32Ω load, and up to 20Vpp at 300Ω, capable of driving both low and high impedance headphones.
- Přesné ovládání hlasitosti: ADC volume adjustment ensures smooth, fine-increment volume changes without undesirable noise or channel imbalances, accommodating various headphone sensitivities.
3. Pokyny k nastavení
3.1 Vybalení a umístění
Carefully remove the FiiO K5 Pro from its packaging. Place the unit on a stable, flat surface away from direct sunlight, heat sources, and excessive moisture. Ensure adequate ventilation around the device.
3.2 Připojení napájení
- Connect the provided power adapter to the 'POWER IN DC 15V' port on the rear panel of the K5 Pro.
- Zapojte napájecí adaptér do vhodné zásuvky.
3.3 Vstupní připojení
The K5 Pro offers multiple input options:
- USB vstup: Connect your computer or compatible device using a USB cable to the 'USB IN' port for high-resolution audio playback.
- KOAXIÁLNÍ VSTUP: Use a coaxial cable to connect to digital audio sources.
- OPTICKÝ VSTUP: Use an optical (TOSLINK) cable to connect to digital audio sources.
- LINKOVÝ VSTUP (RCA): Connect analog audio sources using RCA cables to the 'LINE IN' ports.

Obrázek 2: Zadní panel zobrazující různé vstupní a výstupní připojení.
3.4 Výstupní připojení
- Headphone Out (6.35mm): Plug your headphones into the 6.35mm jack on the front panel. A 3.5mm adapter may be used for headphones with smaller plugs.
- LINKOVÝ VÝSTUP (RCA): Connect to active speakers or another amppomocí RCA kabelů.
4. Návod k obsluze
4.1 Zapnutí/vypnutí a ovládání hlasitosti
The large knob on the front panel serves as both the power switch and volume control. Rotate the knob clockwise until it clicks to power on the device. Continue rotating clockwise to increase volume, and counter-clockwise to decrease volume. Rotate counter-clockwise until it clicks to power off.
4.2 Výběr vstupu
Use the 'INPUT' toggle switch on the front panel to select your desired audio source. The switch positions correspond to different inputs:
- 'U' (USB): For USB input.
- 'L' (Line In): For RCA Line In.
- 'S' (SPDIF): For Coaxial and Optical inputs.
4.3 Gain Selection
The 'GAIN' toggle switch allows you to adjust the amplification level to match your headphones' impedance and sensitivity. There are three gain levels:
- Nízký zisk
- Střední zisk
- Vysoký zisk
Select a lower gain for sensitive headphones and a higher gain for demanding, high-impedance headphones.

Figure 3: Front panel showing volume knob, input, and gain switches.
4.4 RGB Light Indicator
The RGB light around the volume knob indicates the current sample rate of the audio being played:
- Modrý: 48kHz and below
- Zelený: Nad 48 kHz
- Červený: DSD format
Video 1: Overview of the FiiO K5 Pro's appearance and key features, including the RGB light indicator and various input/output options.
5. Údržba
To ensure the longevity and optimal performance of your FiiO K5 Pro, follow these maintenance guidelines:
- Udržujte zařízení čisté otíráním měkkým, suchým hadříkem. Nepoužívejte agresivní chemikálie ani abrazivní materiály.
- Nevystavujte jednotku extrémním teplotám, vlhkosti ani přímému slunečnímu záření.
- Zajistěte správné větrání, aby nedošlo k přehřátí.
- Zabraňte pádu zařízení nebo jeho vystavení silným nárazům.
6. Řešení problémů
If you encounter issues with your FiiO K5 Pro, refer to the following common troubleshooting steps:
- Žádný zvuk:
- Check all cable connections (power, input, headphones/speakers).
- Ensure the K5 Pro is powered on and the volume is not at minimum.
- Verify the correct input source is selected using the 'INPUT' switch.
- Confirm that your computer's audio output is set to the FiiO K5 Pro.
- Zkreslený zvuk:
- Reduce the volume on both the K5 Pro and your source device.
- Adjust the 'GAIN' switch to a lower setting if your headphones are very sensitive.
- Zajistěte zdroj zvuku file není poškozený ani nekvalitní.
- Přerušovaný zvuk:
- Zkontrolujte, zda nejsou uvolněné kabelové spoje.
- Try a different input cable or port.
- Ensure no other devices are interfering with the signal (e.g., electromagnetic interference).
If problems persist, consult the FiiO official support resources or contact customer service.
7. Specifikace
| Funkce | Specifikace |
|---|---|
| Rozměry produktu | 4.72 x 1.97 x 5.12 palce |
| Hmotnost | 15.38 unce |
| DAC čip | ES9038PRO (32-bit processing) |
| USB Decoding Chip | XUF208 |
| Max USB Input Support | 768kHz/32Bit, Native DSD512 |
| Coaxial/Optical Input Support | Až 192kHz |
| Výstup pro sluchátka | 6.35 mm (1/4 palce) |
| RCA linkový výstup | Adjustable up to 2Vrms |
| Maximální výstupní výkon (32Ω) | 1.5 W |
| Max. Objemtage Output (300Ω) | 20Vpp |
| Vstup napájení | DC 15V |
| Typ rozhraní | Coaxial, Headphone, Optical, RCA, USB |
8. Záruka a podpora
The FiiO K5 Pro comes with a standard manufacturer's warranty. For detailed warranty information, please refer to the warranty card included with your product or visit the official FiiO website. For technical support, troubleshooting assistance beyond this manual, or service inquiries, please contact FiiO customer support through their official channels.
Always ensure you are using official FiiO accessories and following recommended guidelines to maintain warranty validity.





