K11 R2R

FiiO K11 R2R Desktop DAC & Headphone Amplifier

Upgrade your desktop listening setup with the FiiO K11 R2R. Combining a fully differential 24-bit R2R DAC with powerful headphone amplification, it brings high-resolution audio playback, precise volume control and flexible listening modes into one compact desktop device.

Precision R2R decoding

At its heart is FiiO’s four-channel R2R DAC, built with 192 precision thin-film resistors. Its fully differential design helps reduce noise and unwanted harmonics, giving your music a cleaner background.

Two modes to explore your music

Switch between Non-Oversampling (NOS) and Oversampling (OS) modes to explore different playback approaches. NOS retains the original sampling rate, while OS upsamples audio to 384kHz.

Power for your headphones

With balanced output delivering up to 1,300mW per channel into 32Ω, the K11 R2R provides ample power for a wide range of headphones. Three gain levels and independent volume curves help you adjust its output for sensitive earphones or more demanding over-ear models.

High-resolution audio support

Enjoy PCM playback up to 384kHz/24-bit and support for DSD256. DSD signals are internally converted to PCM before decoding through the R2R resistor arrays.

Simple desktop control

The high-contrast LCD displays sampling rate, volume, gain and output mode at a glance. A multifunction knob handles volume adjustment, menu navigation and switching between headphone, preamplifier and line-output modes.

Customisable RGB lighting

Adjust the illuminated FiiO logo’s brightness, colour and lighting pattern to suit your setup. The lighting can also indicate the sampling rate of the audio being played.

Key features

• Fully differential four-channel 24-bit R2R DAC
• 192 precision resistors with 0.1% tolerance
• Selectable NOS and OS playback modes
• PCM support up to 384kHz/24-bit
• DSD256 support with internal PCM conversion
• Balanced output up to 1,300mW per channel at 32Ω
• Three gain levels with independent volume curves
• NJW1195A electronic volume control
• Headphone, preamplifier and line-output modes
• High-contrast LCD and adjustable RGB logo lighting

Why Buy the FiiO K11 R2R?

• Upgrade your desktop listening: Combine a dedicated R2R DAC and headphone amplifier in one device for your music setup.
• Get more from demanding headphones: Balanced output of up to 1,300mW per channel at 32Ω provides power for a wide range of over-ear headphones.
• Explore two playback modes: Switch between NOS and OS modes to find the presentation you prefer.
• Use earphones and headphones comfortably: Three gain levels help you match the output to sensitive earphones or more demanding headphones.
• Build a flexible audio setup: Headphone, preamplifier and line-output modes let it serve different roles as your system grows.
• Enjoy convenient control: Check volume, gain and sampling rate on the LCD, and adjust settings with a single multifunction knob.

Ideal for: Music lovers building a desktop headphone setup who want R2R decoding, flexible output modes and straightforward controls.