Fosi Audio SK02 Desktop USB DAC Headphone Amplifier Hifi Portable DSD Audio Decoder with Black Knob

Features:
 SK02 Mini Desktop DAC Headphone Amp
* Compact and powerful: ES9038Q2M DAC chip, SGM8262 op-amp, PCM384, and DSD256 support

A Top Choice for Professional-Grade Audio Quality
* SK02 is designed to meet the needs of audiophiles and is compatible with both low and high impedance headphones.
* Whether you're enjoying the subtle textures of classical music or the powerful energy of modern beats, this device delivers an outstanding audio experience.
* It emphasizes purity and detail, fulfilling audiophiles' pursuit of high-fidelity music.

Minimalist Audio Experience in a Compact Form
* Whether placed in a study, living room, or studio, SK02 integrates seamlessly with your space, adding elegance and harmony to any environment.

High-End ES9038Q2M DAC Chip
* The chip delivers exceptional dynamic response and outstanding sound quality.
* It features wide compatibility with various audio formats.
* With high-resolution decoding and pure tonal performance, it transforms every listening session into a remarkable sensory journey.

Supports up to PCM384kHz and DSD256
* Experience ultimate audio resolution and rich, vivid musical detail.
* It faithfully reproduces wide dynamics and offers flawless sound quality—allowing you to enjoy every moment to the fullest.

Multifunctional Large Knob for Easy Control
* The knob integrates playback, pause, mute, and volume adjustment into one control. It simplifies operation and enhances the user experience.
* With stepless rotation, you can adjust volume freely.
* Single-click to play/pause, double-click to mute — quickly switch music states for more efficient and comfortable audio control.

Powerful Output Drive
* SK02 delivers stable and strong output power, ensuring optimal performance whether you're using lightweight in-ear monitors or professional over-ear headphones.

High/Low Gain Modes for 16-300Ω Headphones
* It supports both high and low impedance headphones, providing flexible gain options for a truly customized listening experience.

Compatible with Power Amplifiers
* It can be used with an amplifier to greatly enhance sound quality. Its high resolution ensures every note — from soft bass to crisp treble — is presented with precision, delivering a pure audio experience.

Versatile Input and Output Interfaces
* The SK02 meets various device needs with flexible connectivity options.
* It supports dual headphone outputs: 3.5mm single-ended and 4.4mm balanced — switch freely to match your listening style.
* Supports optical and USB input: enjoy seamless, high-definition audio transmission.
* 3.5mm AUX/optical combo design: A professional-grade solution combining AUX and optical in one unit for wide compatibility, delivering high-quality audio performance across various devices.

Colorful Indicator Lights Reveal Audio Format at a Glance
* The PCM and DSD indicator lights illuminate instantly, clearly displaying the audio format of each track and helping you focus on every musical detail.

One-Touch Gain and Input Mode Switching
* Dedicated buttons for high/low gain and input source selection allow instant switching with a light press, ensuring optimal sound quality for any scenario.

A Perfect Blend of Tactile Feel and Aesthetics
* Crafted with a fine sandblasted finish, the surface is both durable and refined—embodying our relentless pursuit of quality.

Full Aluminum Alloy Body
* Built from high-grade aluminum alloy using advanced CNC uni-body machining, the chassis is both sturdy and elegant, with an integrated design that exudes craftsmanship.

Precision Chamfered Top Edges
* Smooth and graceful contours not only enhance its sleek appearance but also provide a comfortable grip—every touch is a pleasure.

Solid Aluminum Alloy Knob
* The knob is precisely engineered for durability and offers a smooth, satisfying tactile experience with every adjustment.

Measured Specs, Visible Sound Quality
* Rigorous performance testing ensures that excellent sound is not just a claim, but a measurable, visible promise of quality.

Specifications:
Input: 
* USB-C and Optical (OPT)

Output:
* 3.5mm & 4.4mm headphone output
* 3.5mm AUX/OPT output

Headphone Output Power:
* 3.5mm Single-ended: Low gain: 90mW at 32Ω; High gain: 280mW at 32Ω
* 4.4mm Balanced: Low gain: 350mW at 32Ω; High gain: 1100mW at 32Ω

Signal-to-Noise Ratio (SNR):
* 3.5mm Single-ended: Low gain: 116dB; High gain: 120dB
* 4.4mm Balanced: Low gain: 110dB; High gain: 115dB

Total Harmonic Distortion (THD):
* ≤0.001% at 1kHz

Noise Floor:
* 3.5mm Single-ended: 3.7µV
* 4.4mm Balanced: 12µV

Crosstalk:
* 3.5mm Single-ended: Low gain: 128dB; High gain: 137dB
* 4.4mm Balanced: Low gain: 112dB; High gain: 110dB

Frequency Response:
* 20Hz-20kHz (±0.02dB)

Supported Headphone Impedance:
* 16-300Ω

Input Voltage:
* DC 5V

Packing List:
* 1 × SK02 DAC Headphone Amplifier
* 1 × USB-A/C to USB-C Cable
* 1 × User Manual
    
Packaging Details:
* Weight: 0.5kg

Note:
* It does not support mobile phones.