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Black desktop DAC headphone amplifier with front panel knobs and ports

FiiO

FiiO K13 R2R Desktop DAC Headphone Amplifier

SKU CH-RE60-ZZQ81

A desktop DAC and headphone amplifier using a four-channel 24-bit R-2R resistor array with dual NOS and oversampling modes, Bluetooth 5.4, USB-C, optical, coaxial, XLR, dual RCA.

  • ColorBlack

Colour Black

  • Four-channel R-2R DAC with 192 precision resistors for natural analog sound
  • Dual NOS and oversampling modes up to 384 kHz for flexible tuning
  • Fully balanced chain delivers 2400 mW per channel into 32 ohm loads
  • USB-C, optical, coaxial and Bluetooth 5.4 inputs plus XLR and dual RCA outputs
  • Low, medium and high gain settings match amplifier output to any headphones

FiiO K13 R2R Desktop DAC

The FiiO K13 R2R is a desktop DAC and headphone amplifier that uses a four-channel fully differential 24-bit R-2R resistor array with 192 precision resistors. It delivers up to 2400 mW + 2400 mW into 32 ohm loads and supports PCM up to 384 kHz / 32-bit plus DSD256 native decoding.

Connectivity and Gain Flexibility

Digital inputs include USB-C, optical, coaxial and Bluetooth 5.4 with LDAC, AAC and SBC codecs. Analog outputs provide XLR balanced and dual RCA single-ended line-level connections. Three gain settings allow the amplifier to match a wide range of headphone sensitivities and impedances.

R-2R Resistor Ladder Architecture

The custom 24-bit R-2R ladder with 192 resistors replaces a conventional delta-sigma chip, producing a warmer and more natural analog presentation. Dual NOS and OS modes let the listener choose between native sampling and 384 kHz oversampling for different tonal preferences.

Highlights

  • Four-channel R-2R DAC with 192 precision resistors for natural analog sound
  • Dual NOS and oversampling modes up to 384 kHz for flexible tuning
  • Fully balanced chain delivers 2400 mW per channel into 32 ohm loads
  • USB-C, optical, coaxial and Bluetooth 5.4 inputs plus XLR and dual RCA outputs
  • Low, medium and high gain settings match amplifier output to any headphones

Specifications

BrandFiiO
ModelK13 R2R
ColorBlack

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Questions about this item

How do I verify the K13 R2R is processing audio correctly after connecting it?

The front-panel indicator shows the active input and sample rate; sound should be audible from both the 1/4" and 4.4 mm headphone outputs at the selected gain.

Which cables and accessories are included with the K13 R2R and what must I provide?

The package contains the DAC/amp unit and a USB-C cable; optical, coaxial, XLR, RCA and Bluetooth sources use your own cables or wireless pairing.

Which gain setting should I choose for my headphones on the K13 R2R?

Use low gain for sensitive IEMs, medium for typical portable headphones, and high gain for demanding full-size models that need up to 2400 mW per channel.

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