FiiO K13 R2R Desktop DAC & Headphone Amplifier

Fully differential True 24bit
R2R DAC Resistor Arrays
FIIO’s proprietary four-channel fully differential 24-bit R2R resistor array DAC is composed of 48 precision thin-film resistors per channel, for a total of 192 resistors across four channels. Each resistor features 0.1% accuracy and low temperature drift (30ppm). This R2R DAC allows the K13 R2R to deliver a uniquely rich and musical sound.

Comparison between fully differential and typical architectures
The K13 R2R employs a fully differential architecture that leads to lower noise, and fewer FFT harmonics, resulting in a darker music background.

Dual NOS/OS modes Double the fun
NOS (Non-Oversampling) Mode: Maintains the original sampling rate for decoding, preserving authentic sound and allowing you to enjoy an organic and captivating musical experience.
OS (Oversampling) Mode: Upsamples globally to a high sampling rate of 384kHz, for superior audio performance and even more refined, clear sound.

Preamplifier + power amplifier output Desktop decoding hub
With a wide variety of inputs and outputs, this unit functions as both a preamplifier and a power amplifier, catering to various listening preferences. It also supports PCM 384kHz/32bit and DSD256 decoding, allowing it to effortlessly process high-resolution audio signals to deliver rich sonic detail and for an outstanding listening experience.

Ten-band high-precision PEQ Effortless sound customization
The K13 R2R, with the help of the XMOS XU316 platform, features specially-developed PEQ*, with support for 10 frequency band adjustments across all operating modes. With FIIO's proprietary tuning algorithm, accessible through their app or web interface*, you can easily utilize preset tunings like "Retro PEQ," or even simulate and correct headphone frequency response curves. It also supports exporting, importing, sharing, and saving EQ curves, and auto-EQ, making sound tuning effortless.

Specially-designed power supply
DC/AC dual power supplies
The built-in 30W switching power supply is protected by an alloy nickel-plated shielding cover, which significantly boosts its anti-interference capabilities and ensures a cleaner power supply. Additionally, it also features an external DC power input*, allowing you to pair it with a higher-performance linear power supply for a different sound experience.

ELNA RA3 audiophile-grade electrolytic capacitors
Premium ELNA RA3 series silk-film audio capacitors and specialized audio tantalum electrolytic capacitors work together to ensure a pure, stable power supply for the device, delivering a warm and natural sound.

Robust output Revealing every last detail
Boasting a balanced output power of 2400mW+2400mW into a 32Ω load, the K13 R2R can effortlessly drive both high-fidelity IEMs and headphones, unlocking their full potential and allowing them to render every last detail.

Superior screen Superior clarity
A custom, high-contrast, long-lasting HD LCD display clearly shows the device’s current status at a glance, including sampling rate, volume, gain, and output mode.