FiiO K15 AK4497S*2 Streaming DAC & Powerful Headphone Amplifier

Leading the new 'core' generation Dual high-end AKM DAC AK4497S

The K15 is among the first to use two of the new high-end AKM DAC chips,AK4479SVQ featuring the upgraded 'VELVET SOUND' audio technology.The chips achieve low distortion, a wide dynamic range, and extended signal bandwidth, all at low power consumption. Rich detail is retained inboth low and high frequencies for a natural and immersive sound experience.

Discrete architecture Class-AB transistor current-boosting headphone amplifier circuit

Within the K15 is a carefully designed discrete headphone amplifier circuit, featuring an OP + transistor current-boosting design. A complementary pair of the classic ON Semiconductor MJE243G/253G delivers high current and low impedance output.This discrete circuit can achieve balanced output power up to 3000mW + 3000mw, allowing the K15 to effortlessly drive both full-sized headphones and in-ear monitors - producing smooth,natural, yet melodious sound.

Fully balanced audio circuit

From DAC decoding, low-pass filtering, gain control, and to headphone amplification, the K15's audio circuit is a fully differential design. Such a design ensures wide dynamic range while also effectively reducing crosstalk, minimizing noise, and enhancing the quality of audio output.

Precisely designed power supply DC/AC dual power supply

The K15 features a built-in next-generation 30w (12V-2.5A) low-noise, high-efficiency, long-lasting, industrialand instrumentation-grade power supply. The K15 also supports external DC power supplies,
allowing it to work with higher-performance linear power supplies for even higher sound quality.

Dual master cores Stable and smooth experience

High-performance multi-core processor X2000: This processor is powered by a unique design featuring dual XBurst@2 cores + XBurst@0 micro-core, to deliver exceptional computing performance at ultra-low power consumption. This ensures precise audio signal processing,guaranteeing stable and smooth music playback.
Efficient MCU ESP32-S3: Integrated into this chip is a high-performance Xtensa 32-bit LX7 dual-core processor and an ultra-low-power coprocessor, featuring a clock speed of up to 240MHz. This chip enables precise system control for a highly efficient and fast user experience.