FiiO K13 R2R High-Performance Desktop DAC and Headphone Amplifier

FiiO K13 R2R – Premium Desktop DAC and Headphone Amplifier

The FiiO K13 R2R represents a top-tier desktop DAC and headphone amplifier crafted for audiophiles who seek pristine sound quality. Utilizing a fully differential 24-bit R2R resistor ladder DAC, this device delivers a warm, analog-like sound signature packed with intricate detail and natural tonal richness. Combining advanced audio technology with a sleek, minimalist design, the K13 R2R offers an immersive experience for both in-ear monitors and full-size headphones.

Featuring Bluetooth 5.4 with support for LDAC, AAC, and SBC codecs, the FiiO K13 R2R allows wireless playback of high-resolution audio without compromising clarity or depth. It provides a balanced output power of 2400mW per channel at 32Ω, easily powering demanding headphones and uncovering the finest musical nuances. With three gain settings and tailored volume curves, it adapts perfectly to a wide range of headphones—from sensitive IEMs to high-impedance audiophile models.

The integrated custom LCD screen displays essential information such as sample rate, volume, gain, and output mode at a glance. Built with a reinforced aluminum chassis and a skylight window, the K13 R2R is both durable and aesthetically striking, highlighting its premium internal components.

Additional features include customizable RGB lighting, a programmable auto-shutdown timer (1–99 minutes), and an infrared remote control, enhancing both convenience and functionality. Equipped with high-grade ELNA RA3 capacitors, the device ensures stable, noise-free power delivery, resulting in a warm yet finely detailed sound profile.

With dual Type-C inputs, multiple digital interfaces (USB, coaxial, optical), and full compatibility with the FiiO Control App, the K13 R2R stands as the ultimate desktop DAC/amp solution for those who demand uncompromised sound and elegant technology.

SPECIFICATIONS:

Color

Black, Silver

Main Control Chip (MCU)
ESP32-S3

USB Chip
XMOS XU316

DAC
Fully differential 24-bit true R2R resistor ladder DAC

Volume Control Chip
NJW1195AV

R2R & LPF Operational Amplifier
OPA1642 ×4

LO Buffer Operational Amplifier
LTA8092 ×2

Headphone Amplifier
OPA1642 ×2 + TPA6120A ×2

USB Input
384kHz/32bit, DSD256 support

Coaxial Input
192kHz/24bit, DSD64 support

Optical Input
192kHz/24bit

USB Connector
Dual Type-C

Display
Custom HD LCD

Power Supply
AC 100–240V 50/60Hz; DC 12V/2.5A

Dimensions
210 × 188 × 42 mm

Weight
Approximately 980 g

Single-Ended Power Output 1
L+R ≥ 1220mW + 1220mW (32Ω, THD+N < 1%)

Single-Ended Power Output 2
L+R ≥ 150mW + 150mW (300Ω, THD+N < 1%)

Balanced Power Output 1
L+R ≥ 2400mW + 2400mW (32Ω, THD+N < 1%)

Balanced Power Output 2
L+R ≥ 600mW + 600mW (300Ω, THD+N < 1%)

Frequency Response
20Hz–80kHz (attenuation < 2.9dB)

Signal-to-Noise Ratio (SNR)
≥116dB (A-weighted)

Noise Floor
SE <5µV, BAL <8µV (A-weighted, Medium gain)

Output Impedance
SE <0.7Ω (with 32Ω load); BAL <1Ω (with 32Ω load)

Total Harmonic Distortion plus Noise (THD+N)
~0.0173% (1kHz/-6dB @ 32Ω)