1. Įvadas
The FiiO K13 R2R is a high-fidelity desktop Digital-to-Analog Converter (DAC) and Headphone Amplifier designed to deliver exceptional audio performance. It features a proprietary 24-bit R2R DAC, powerful output capabilities, versatile connectivity, and advanced sound customization options. This manual provides essential information for setting up, operating, and maintaining your FiiO K13 R2R.

Figure 1: FiiO K13 R2R Desktop DAC & Headphone Amp (juoda)
Key features include a fully differential 24Bit R2R DAC, NOS/OS dual modes for flexible listening, versatile desktop DAC and preamp/ausines amp functionality, 10-band high-precision PEQ with auto EQ, and LDAC Bluetooth 5.4 wireless HiFi support.
2. Kas yra dėžutėje
Please check the contents of your FiiO K13 R2R package:
- Greitos pradžios vadovas
- AC power cord*1
- Infrared remote control*1
- USB duomenų kabelis * 1
- Headphone adapter*1

Figure 2: Package contents of the FiiO K13 R2R.
3. Produktas baigtasview
Priekinis skydelis
The front panel of the FiiO K13 R2R features essential controls and output ports for easy access and operation.

3 pav.: priekis view of the FiiO K13 R2R, showing the display, headphone outputs, and control knobs.
- Menu/Input Knob: Rotate to navigate menus or adjust settings. Press to confirm selection or switch input sources.
- Ekranas: Rodo dabartinę įvestį, sampling rate, volume level, and menu options.
- 6.35 mm vienpusė ausinių išvestis: Standartinis ausinių lizdas.
- 4.4 mm subalansuota ausinių išvestis: Subalansuotas ausinių lizdas geresniam garso atkūrimui.
- Garsumo rankenėlė: Pasukite, norėdami reguliuoti išvesties garsumą.
Galinis skydelis
The rear panel provides a comprehensive array of input and output connections for integration into various audio systems.

4 pav.: galinis view of the FiiO K13 R2R, detailing the various input and output ports.
- Balanced XLR Output (L/R): Prijungimui prie balansinių ampkeltuvai arba aktyvūs garsiakalbiai.
- RCA linijinis išėjimas (K/D): Prijungimui prie nesubalansuotų ampkeltuvai arba aktyvūs garsiakalbiai.
- Koaksialinė įvestis: Skaitmeninė garso įvestis.
- Optinė įvestis: Skaitmeninė garso įvestis.
- USB IN (Type-C): For connecting to a computer or other USB audio sources.
- Nuolatinės srovės įvestis (12 V): External DC power input option.
- AC Power Input (100-240V): Pagrindinis maitinimo prijungimas.
- „Bluetooth“ antena: For wireless Bluetooth reception.
Internal Architecture Highlights
The FiiO K13 R2R incorporates advanced internal components for superior audio fidelity.

Figure 5: Diagram illustrating the fully differential 24Bit R2R DAC resistor arrays.
- Fully Differential 24Bit R2R DAC: Composed of 192 ultra-precise 0.1% thin-film resistors for a unique analog-like timbre.
- Specially-designed DC/AC Dual Power Supplies: Built-in 30W switching power supply with alloy nickel-plated shielding, plus an external DC power input option for cleaner power.
- ELNA RA3 Audiophile-grade Electrolytic Capacitors: Ensures a pure, stable power supply for warm and natural sound.
- Fully Balanced Audio Ampkėlimo grandinė: Utilizes fully differential signal processing for excellent interference rejection, minimal distortion, and high dynamic range.
4. Sąranka
Maitinimo prijungimas
- Connect the provided AC power cord to the AC Power Input on the rear panel of the K13 R2R.
- Plug the other end of the AC power cord into a suitable wall outlet.
- Alternatively, for an external DC power supply, connect a 12V-2.5A (or greater) supply with a 5.5*2.1mm connector to the DC IN port.
Garso jungtys
Choose the appropriate connection method based on your audio source and output devices.
- USB jungtis: Connect your computer or other USB audio source to the USB IN (Type-C) port using the provided USB data cable.
- Optinis/koaksialinis jungtis: Connect your digital audio source (e.g., CD player, TV) to the Optical Input or Coaxial Input ports.
- Ausinių išvestis: Connect your headphones to either the 6.35mm Single-Ended or 4.4mm Balanced Headphone Output on the front panel. Use the provided adapter if necessary.
- Linijos išvestis: Connect the Balanced XLR Output or RCA Line Out to your ampkeltuvai arba aktyvūs garsiakalbiai.
"Bluetooth" poravimas
The FiiO K13 R2R supports high-resolution Bluetooth 5.4 streaming.
- Įsitikinkite, kad „Bluetooth“ antena yra tvirtai pritvirtinta prie galinio skydelio.
- Power on the FiiO K13 R2R.
- Press the Menu/Input knob to cycle through input modes until 'BT' (Bluetooth) is selected on the display.
- On your mobile device or Bluetooth player, enable Bluetooth and search for available devices.
- Select 'FiiO K13 R2R' from the list to pair. Once connected, the display will indicate a successful Bluetooth connection.
Video 1: This video demonstrates Bluetooth receiver functionality using a similar FiiO product (K9 Pro). The pairing process for the K13 R2R is similar.
5. Naudojimo instrukcijos
Pagrindinė operacija
- Maitinimo įjungimas/išjungimas: Press the power button (usually integrated with the Menu/Input knob or a dedicated button) to turn the device on or off.
- Garsumo valdymas: Rotate the Volume Knob on the front panel to adjust the output volume for headphones or line outputs.
- Įvesties pasirinkimas: Press the Menu/Input knob to cycle through available input sources (USB, Optical, Coaxial, Bluetooth). The selected input will be shown on the display.
NOS/OS Dual Modes
The K13 R2R offers two distinct operating modes for audio processing:

Figure 6: Illustration of NOS (Non-Oversampling) ir OS (virš.)ampling) modes.
- NOS (neperleidžiami)ampling) Režimas: Preserves the original sampling rate for a pure, natural, and organic sound.
- OS (virš.)ampling) Režimas: Upsamples audio to 384kHz for improved audio metrics, delivering finer and clearer sound.
- To switch between modes, navigate through the device's menu using the Menu/Input knob.
10-Band High-Precision PEQ
Customize your sound with the integrated 10-band Parametric Equalizer (PEQ).

7 pav. Pvzample of the 10-band high-precision PEQ interface.
- The PEQ can be accessed and customized via the FiiO Control app or a web sąsaja.
- Adjust 10 frequency bands to tailor the sound to your preference or correct headphone response.
- Access presets like vintage PEQ or share EQ profiles.
6. Priežiūra
- Valymas: Įrenginio išorę valykite minkšta, sausa šluoste. Venkite naudoti skystus valiklius ar tirpiklius.
- Saugykla: Laikykite prietaisą vėsioje, sausoje vietoje, apsaugotoje nuo tiesioginių saulės spindulių ir ekstremalių temperatūrų.
- Tvarkymas: Atsargiai elkitės su prietaisu, kad išvengtumėte pažeidimų dėl kritimų ar smūgių.
7. Problemų sprendimas
- Nėra garso išvesties:
- Check all cable connections (power, input, output) are secure.
- Ensure the correct input source is selected on the K13 R2R.
- Verify the volume level is not set to minimum or muted.
- Test with different headphones or speakers to isolate the issue.
- „Bluetooth“ ryšio problemos:
- Ensure the K13 R2R is in Bluetooth pairing mode.
- Move your mobile device closer to the K13 R2R to improve signal strength.
- Pamirškite įrenginį savo mobiliojo įrenginio „Bluetooth“ nustatymuose ir bandykite susieti iš naujo.
- Iškraipytas garsas:
- Patikrinkite garso šaltinio kokybę.
- Ensure the volume is not set too high, causing clipping.
- Verify that the correct sampling rate is being used.
8. Specifikacijos
| Funkcija | Specifikacija |
|---|---|
| Modelio numeris | K13 R2R |
| DAC tipas | FiiO Self-Developed Fully Differential 24Bit R2R DAC |
| Išėjimo galia | Powerful 2400mW Output |
| Bluetooth versija | Bluetooth 5.4 (LDAC, AAC, SBC codecs) |
| Dekodavimo palaikymas | PCM 384kHz/32bit, DSD256 |
| Ekvalaizeris | 10-Band High-Precision PEQ |
| Išėjimai | XLR Balanced Line Out, Dual RCA Outputs, 4.4mm Balanced Headphone Out, 6.35mm Single-Ended Headphone Out |
| Maitinimo šaltinis | Dual Power Supply (Built-in 30W, External DC 12V-2.5A option) |
| Prekės svoris | 3.24 svaro |
| Pakuotės matmenys | 12.24 x 9.53 x 2.52 colio |
9. Garantija ir palaikymas
For warranty information, technical support, and further assistance, please refer to the official FiiO websvetainėje arba susisiekite tiesiogiai su jų klientų aptarnavimo tarnyba. Išsaugokite pirkimo kvitą garantiniams reikalavimams.
Oficialus FiiO Websvetainė: www.fiio.com





