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Black desktop DAC and headphone amplifier unit

FiiO

FiiO K11 R2R DAC Headphone Amplifier Black

SKU CH-37MC-QGG0M

Entry-level desktop DAC and headphone amplifier using a fully differential 24-bit R2R resistor ladder with 48 resistors per channel across four channels

  • ColorBlack
  • Fully differential 24-bit R2R ladder with 192 ultra-thin film resistors
  • 1 % resistor accuracy gives clean output and dark background
  • NOS and OS modes let you choose original or oversampled playback
  • Desktop DAC and headphone amp improves audio from computers and phones
  • Entry-level R2R architecture brings distinctive sound quality at affordable price

First R2R desktop DAC

The FiiO K11 R2R is a desktop DAC and headphone amplifier that uses a fully differential 24-bit R2R resistor array with four channels. It is built for listeners who want the distinctive sound of a ladder DAC at an entry-level price. The unit connects to computers, smartphones, tablets or HiFi players and improves the audio quality of those sources. It suits both headphone and speaker setups in a home or office environment.

Check your source outputs

Verify that your computer, phone or player can send digital audio through USB, optical, coaxial or Bluetooth so the K11 R2R can decode it. The device also provides analogue line outputs for powered speakers or a separate amplifier. Ensure you have the matching cables for the chosen digital input and for the headphone or line connections you plan to use.

Resistor ladder build

The circuit employs 48 ultra-thin film resistors per channel, totalling 192 resistors with 0.1% accuracy and low temperature drift across the four channels. This precision array delivers a clean, sharp output with a dark background and fewer harmonic components. Front-panel switches select between NOS and OS modes for different listening preferences. The black aluminium chassis houses the ladder network and amplification stages in a compact desktop form.

Highlights

  • Fully differential 24-bit R2R ladder with 192 ultra-thin film resistors
  • 1 % resistor accuracy gives clean output and dark background
  • NOS and OS modes let you choose original or oversampled playback
  • Desktop DAC and headphone amp improves audio from computers and phones
  • Entry-level R2R architecture brings distinctive sound quality at affordable price

Specifications

ColorBlack

Questions about this item

What comes in the box and what must be purchased separately?

The unit ships with the FiiO K11 R2R DAC and headphone amplifier itself; cables, headphones or speakers are not included and must be bought separately.

Which version or capacity of the K11 R2R should I choose?

Only one model is offered — a single black desktop unit with a fully differential 24-bit R2R resistor ladder, so there are no alternative versions or capacities to select.

What does the 24-bit R2R specification mean for everyday listening?

It indicates a fully differential 24-bit resistor ladder with 48 ultra-thin film resistors per channel (192 total at 0.1% accuracy), delivering lower noise, fewer harmonic components and a darker background in both NOS and oversampling modes.

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