The K13 is equipped with dual ESS latest-generation flagship DACs. It uses ESS’s patented fourth-generation 32-bit HyperStream architecture for higher performance and lower power consumption, while further reducing digital noise inside the DAC. The result is a richer musical presentation and a cleaner, darker background.

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 768kHz/32bit and DSD512 decoding, allowing it to effortlessly process high-resolution audio signals to deliver rich sonic detail and for an outstanding listening experience.

Supports AUTO EQ, One tap to dial in your ideal sound

The K13, with the help of the XMOS XU316 platform, features specially-developed PEQ*, with support for 10 frequency band adjustments across all working modes. With FIIO's proprietary tuning algorithm, accessible through its app or web interface*, you can match your ideal headphone curve with one tap, then fine-tune it further.

Fully balanced audio amplifier circuit

The entire audio chain, including the DAC, I/V conversion, LPF, preamp buffer, and headphone amp, uses fully differential signal processing for excellent interference rejection, minimal distortion, and high dynamic range. The amplification circuit also features gain control, professional headphone protection mechanisms, and POP noise elimination for a robust and reliable audio experience.

Specially-designed power supply

The K13 features a built-in 30W (12V, 2.5A) industrial- and instrumentation-grade power module with low noise, high efficiency, and long service life, delivering clean, abundant power to the circuitry. Additionally, it also provides an external DC power input*, allowing you to pair it with a higher-performance linear power supply for a different sound experience.

Multi-rail power supply, robust performance

With up to 18 low-noise LDOs and 5 DC-DC converters in total, this unit employs a multi-rail power supply to provide strong and clean power for exceptional audio output.

Audiophile-grade components the foundation of great sound

Robust output

Revealing every last detail

Boasting a balanced output power of 2400mW+2400mW into a 32Ω load, the K13 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.

*Long-lasting LCD display, can always be on without risk of burn-in

Minimalist design

With technological elegance

The thickened, unibody aluminum alloy casing, paired with a brand-new “skylight” design, not only continues the K11 series’ minimalist design language but also introduces a literal technological window into the DAC module. The flowing light and vibrant colors showcase a unique tech aesthetic.

LDAC high-res Bluetooth Truly enjoy wireless HiFi

With support for Bluetooth 5.4 and reception for the LDAC/AAC/SBC codecs, the K13 allows you to be immersed into in a world of high- quality music even when listening wirelessly.

Precisely designed Perfect performance

Three gain levels, three independent volume curves

Different gain levels mean the K13 is better able to adapt to various kinds of IEMs and headphones for better listening experiences. Moreover, volumes of PO and PRE can be memorized independently.

Parts list