Fiio K19 - Black - Silver

Description

A Monumental Step in Desktop HiFi
The FiiO K19 is a new-generation reference desktop DAC/headphone amplifier designed to unify sheer power, precision engineering, and cutting-edge versatility in one device. Featuring dual flagship ESS ES9039SPRO DACs, an 8-channel THX AAA 788+ amplification stage, and a powerful ADI SHARC+ DSP with 31-band high-precision PEQ, the K19 is engineered to handle any use case — from professional headphone driving to high-fidelity home audio integration with HDMI ARC.

31-Band High-Precision Lossless PEQ
Thanks to the ADI ADSP-21565 SHARC+ DSP (800 MHz), the K19 introduces a 31-band lossless PEQ, adjustable directly on PCM signals (44.1–192 kHz) without resampling. Users can apply advanced EQ with ±12 to -24dB gain, fine Q adjustment (0.4–128), and even share or import/export PEQ presets — enabling precise headphone tuning or system-wide correction. Proprietary DEL (Dual Engine Limiter) technology supports dynamic range compression/expansion, limiters, and clipping protection for both accuracy and safety.

Dual ES9039SPRO – Flagship ESS DACs
At the digital core are two ESS ES9039SPRO DACs, ESS’s latest 8-channel hyperstream converters, capable of exceptional dynamic range and detail retrieval. With fourth-generation 32-bit HyperStream technology and ultra-low noise characteristics, the K19 produces a refined sonic experience with natural timbre and immersive realism. Combined with a high-performance quad-core FPGA for digital signal routing, the DAC section ensures signal purity like never before.

8-Channel THX AAA 788+ Amplification
Headphone performance is powered by eight channels of THX AAA 788+ amplifiers arranged in a fully balanced 4-channel system with 2×2 parallel groups. Backed by a high-voltage power supply, the K19 delivers up to 8000 mW + 8000 mW into 32 Ω — effortlessly powering even the most demanding headphones without distortion. Smooth, controlled transients and distortion-free output ensure confidence across all listening scenarios.

Clocking and Circuit Design
The K19 integrates dual Accusilicon AS318-B femtosecond oscillators (45.1584 / 49.1520 MHz), carefully selected and pre-screened for ultra-low phase noise. These work in tandem with global clock management and a fully balanced, differential audio path to guarantee minimal jitter and outstanding stability. The analog chain employs premium OPA2211 and OPA1602 op-amps for I/V conversion, filtering, and preamp stages, maintaining resolution throughout.

Premium Power & Construction
Internally, a 40W industrial-grade low-noise power supply supports both AC and external DC (15V–3A linear) powering. Multi-stage regulation with numerous precision LDOs ensures stable voltage rails for DAC, LPF, preamp, and amplifier circuits. Physically separated boards for digital, analog, and power, plus shielded metal compartments & honeycomb-mesh aluminum chassis, reduce interference and improve signal purity.

Elegant Unibody Chassis & HDMI ARC Support
The die-cast unibody aluminum alloy shell offers both slimness and shock protection, with a unique stand to allow vertical or horizontal orientation. For the first time in a FiiO flagship, the K19 features HDMI/ARC support up to 192kHz/24-bit, enabling direct integration into audiovisual setups. A 1.3-inch full-color display, infrared remote control, bidirectional 12V trigger, and app compatibility all contribute to an elevated luxury user experience.

What’s in the box
FiiO K19 unit
AC power cord
Remote control
XLR4 decorative plug
Fuse
USB cables (x2)
Headphone adapter