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Product Description

  • Compact Yet Powerful: The SK02 employs a minimalist and stylish design language. Despite its small size, it boasts mighty features. It supports DSD256 and PCM 32bit/384kHz high-resolution decoding, along with 3.5mm single-ended and 4.4mm balanced headphone outputs. Its robust power can easily drive wide range of headphones and IEMs with an impedance range of 16-300 ohms.
  • Stunning Performance: It features a high-end ESS SABRE ES9038Q2M DAC and SGM8262 op-amps. Its excellent circuit design ensures superior parameters with a SNR as high as 120dB, a low noise floor of only 3.7μV, and an incredibly low THD of 0.001%. The 4.4mm balanced output power reaches an impressive 1100mW at 32 ohms. The exceptional high-resolution capability and pure sound quality make every listening experience an extraordinary sensory journey.
  • User-Friendly Design: The SK02 requires no drivers and offers plug-and-play convenience. It integrates a big multi-functional control knob, allowing easy access to power on/off, play/pause, and volume adjustments. The unit features quick-switch buttons for high/low gain and input modes. Additionally, its colorful indicator lights enable effortless identification of the current working mode and the song's sampling rate.
  • Remarkable Versatility: Supports USB and optical input, widely applicable for decoding with computers, laptops, CD players, TVs, and projectors. Not only can it function as a headphone amplifier, but it can also serve as a preamp, pairing with active speakers or an amplifier like Fosi Audio V3, ZA3, TB10D amp and passive speakers to form a desktop listening or home audio system.
  • Exquisite and Durable: The SK02 is crafted from a single piece of aluminum alloy using CNC machining and a delicate sandblasting process. This not only gives it an exquisite appearance but also ensures lasting durability. In addition, Fosi Audio pledges to provide a 24-month worry-free warranty and responsive customer service to all users.

Product Description

Compact Yet Powerful

Fosi Audio SK02 Desktop DAC Headphone Amp

Capturing every nuance from classical to modern beats, the SK02 blends purity and rich details that are perfect for HiFi enthusiasts.

Premium Sound, Audiophile's Choice


The SK02 is a headphone amplifier with built-in decoding functionality, designed for uniqueness and practicality. It is equipped with a multifunctional volume control knob, separate gain and mode selection buttons. Get the best performance out of your headphones.

  • Input: USB, OPT
  • Output: 3.5mm single-ended, 4.4mm balanced, 3.5mm AUX/OPT
  • Max Power Output: 3.5mm: 280mW@32Ω, 4.4mm: 1100mW@32Ω
  • Terminating Impedance: 16-300Ω
  1. Minimalist Desktop Audio

    It effortlessly fits any desktop space, adding a touch of elegance and harmony to every corner.

  2. Fully Unleash Exceptional Power

    Provides stable and strong power for high-impedance headphones and IEMs to perform at their best.

  3. Ideal Partner for Amplifiers

    Enhances audio clarity with deep bass to clear highs for an immersive listening experience.

  4. High and Low Gain Modes

    Adapts to 16-300Ω impedance headphones with flexible gain for a tailored auditory experience.

1 Compact Design 2 Robust Power 3 Desktop DAC 4 Gain Levels
  1. Multifunctional Knob for Easier Control

    Combines play/pause/mute and volume controls for a streamlined process, enhancing user experience.

  2. All Aluminum Alloy Chassis

    Made with aluminum alloy using advanced CNC molding, achieving a robust yet refined unibody design.

  3. 3.5mm Single-End and 4.4mm Balanced

    Easily meet your diverse needs, making it the ideal companion for your headphones and IEMs.

1 Large Knob 2 Multifunctional Knob 3 Aluminum Alloy 4 Headphone Jacks
  1. SABRE ES9038Q2M DAC & SGM8262 Op-Amps

    With the outstanding high resolution, the SK02 headphone amplifier brings you a crystal clear sound.

  2. Crafted for Audiophiles

    Robust output power, high signal-to-noise rate and ultra-low noise floor.

  3. Supports High-Res PCM384kHz & DSD256

    The Fosi Audio SK02 restores sound, redefining the ultimate standards of auditory enjoyment.

  4. Colorful Indicators, Visible Music Formats

    Instantly lit PCM and DSD indicators show audio format, helping your focus on every music detail.

1 Premium Chips 2 Audiophile Grade Specs 3 High Resolution 4 Vibrant LED Indicators

One-Button Gain and Input

Equipped with dedicated buttons for high/low gain and input source; a simple touch switch settings, crafting perfect sound.

Supports Optical & USB Input

Efficient connectivity and clear transmission for seamless high-resolution audio, ushering in a new era of high-quality audio transmission.

3.5mm AUX/Optical

Dual enjoyment in one: The seamless fusion of AUX and optical outputs provides a professional audio experience for various devices.

Solid Aluminum Alloy Knob

Precision-engineered for durability and reliability, providing a smooth and comfortable operational experience.

Parameter Comparison

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Customer Reviews
4.4 out of 5 stars
9
4.6 out of 5 stars
69
4.2 out of 5 stars
488
4.3 out of 5 stars
2,587
4.3 out of 5 stars
317
3.0 out of 5 stars
14
4.2 out of 5 stars
151
Price
$159.99$159.99 $119.99$119.99 $89.99$89.99 $79.99$79.99 $69.99$69.99 $129.99$129.99
Type
Headphone Amp+Equalizer Headphone Amp+Equalizer DAC+ Headphone Amp DAC+ Headphone Amp Headphone Amp + Preamp Portable Headphone Amp DAC+ Headphone Amp
MAX Power Output
3.5MM: 280mW, 4.4MM: 1100mW 2400mW@32 Ohm - - 120mW@32 Ohm 138mW @32Ω 15mW @300Ω 120mW(SE); 220mW(BAL)
Input
USB/OPT 3.5mm AUX USB-C+OPT+COA+Microphone USB + Optical + Coaxial AUX + RCA Blueooth + AUX Type C+ USB A
Output
3.5mm/4.4mm HP+3.5mm AUX/OPT 3.5mm AUX+6.35mm Headphone RCA + 3.5mm Headphone RCA + 3.5mm Headphone 3.5 mm + 6.35 mm 3.5mm Headphone 3.5mm + 4.4mm Headphone
Treble & Bass Control
THD
≤ 0.001% ≤ 0.001% <0.003% ≤ 0.01% ≤ 0.03% ≤ 0.001% ≤ 0.0006%(SE) ≤ 0.001%(BAL)
SNR
3.5mm: 120dB; 4.4mm: 115dB ≥ 108dB >110dB ≥ 105dB ≥ 95dB ≥ 95dB ≥120dB
Terminating Impedance
16-300 Ohms 16-300 Ohms 16-300 Ohms 16-200 Ohms 16-300 Ohmss 16-300 Ohms 16-300 Ohms

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Fosi Audio SK02 DAC Amp Headphone Amplifier Desktop USB C to AUX Digital to Analog Audio Converter

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$160.94
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$160.94
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  • Compact Yet Powerful: The SK02 employs a minimalist and stylish design language. Despite its small size, it boasts mighty features. It supports DSD256 and PCM 32bit/384kHz high-resolution decoding, along with 3.5mm single-ended and 4.4mm balanced headphone outputs. Its robust power can easily drive wide range of headphones and IEMs with an impedance range of 16-300 ohms.
  • Stunning Performance: It features a high-end ESS SABRE ES9038Q2M DAC and SGM8262 op-amps. Its excellent circuit design ensures superior parameters with a SNR as high as 120dB, a low noise floor of only 3.7μV, and an incredibly low THD of 0.001%. The 4.4mm balanced output power reaches an impressive 1100mW at 32 ohms. The exceptional high-resolution capability and pure sound quality make every listening experience an extraordinary sensory journey.
  • User-Friendly Design: The SK02 requires no drivers and offers plug-and-play convenience. It integrates a big multi-functional control knob, allowing easy access to power on/off, play/pause, and volume adjustments. The unit features quick-switch buttons for high/low gain and input modes. Additionally, its colorful indicator lights enable effortless identification of the current working mode and the song's sampling rate.
  • Remarkable Versatility: Supports USB and optical input, widely applicable for decoding with computers, laptops, CD players, TVs, and projectors. Not only can it function as a headphone amplifier, but it can also serve as a preamp, pairing with active speakers or an amplifier like Fosi Audio V3, ZA3, TB10D amp and passive speakers to form a desktop listening or home audio system.
  • Exquisite and Durable: The SK02 is crafted from a single piece of aluminum alloy using CNC machining and a delicate sandblasting process. This not only gives it an exquisite appearance but also ensures lasting durability. In addition, Fosi Audio pledges to provide a 24-month worry-free warranty and responsive customer service to all users.

Product Description

Compact Yet Powerful

Fosi Audio SK02 Desktop DAC Headphone Amp

Capturing every nuance from classical to modern beats, the SK02 blends purity and rich details that are perfect for HiFi enthusiasts.

Premium Sound, Audiophile's Choice


The SK02 is a headphone amplifier with built-in decoding functionality, designed for uniqueness and practicality. It is equipped with a multifunctional volume control knob, separate gain and mode selection buttons. Get the best performance out of your headphones.

  • Input: USB, OPT
  • Output: 3.5mm single-ended, 4.4mm balanced, 3.5mm AUX/OPT
  • Max Power Output: 3.5mm: 280mW@32Ω, 4.4mm: 1100mW@32Ω
  • Terminating Impedance: 16-300Ω
  1. Minimalist Desktop Audio

    It effortlessly fits any desktop space, adding a touch of elegance and harmony to every corner.

  2. Fully Unleash Exceptional Power

    Provides stable and strong power for high-impedance headphones and IEMs to perform at their best.

  3. Ideal Partner for Amplifiers

    Enhances audio clarity with deep bass to clear highs for an immersive listening experience.

  4. High and Low Gain Modes

    Adapts to 16-300Ω impedance headphones with flexible gain for a tailored auditory experience.

1 Compact Design 2 Robust Power 3 Desktop DAC 4 Gain Levels
  1. Multifunctional Knob for Easier Control

    Combines play/pause/mute and volume controls for a streamlined process, enhancing user experience.

  2. All Aluminum Alloy Chassis

    Made with aluminum alloy using advanced CNC molding, achieving a robust yet refined unibody design.

  3. 3.5mm Single-End and 4.4mm Balanced

    Easily meet your diverse needs, making it the ideal companion for your headphones and IEMs.

1 Large Knob 2 Multifunctional Knob 3 Aluminum Alloy 4 Headphone Jacks
  1. SABRE ES9038Q2M DAC & SGM8262 Op-Amps

    With the outstanding high resolution, the SK02 headphone amplifier brings you a crystal clear sound.

  2. Crafted for Audiophiles

    Robust output power, high signal-to-noise rate and ultra-low noise floor.

  3. Supports High-Res PCM384kHz & DSD256

    The Fosi Audio SK02 restores sound, redefining the ultimate standards of auditory enjoyment.

  4. Colorful Indicators, Visible Music Formats

    Instantly lit PCM and DSD indicators show audio format, helping your focus on every music detail.

1 Premium Chips 2 Audiophile Grade Specs 3 High Resolution 4 Vibrant LED Indicators

One-Button Gain and Input

Equipped with dedicated buttons for high/low gain and input source; a simple touch switch settings, crafting perfect sound.

Supports Optical & USB Input

Efficient connectivity and clear transmission for seamless high-resolution audio, ushering in a new era of high-quality audio transmission.

3.5mm AUX/Optical

Dual enjoyment in one: The seamless fusion of AUX and optical outputs provides a professional audio experience for various devices.

Solid Aluminum Alloy Knob

Precision-engineered for durability and reliability, providing a smooth and comfortable operational experience.

Parameter Comparison

Add to Cart
Add to Cart
Add to Cart
Add to Cart
Add to Cart
Add to Cart
Customer Reviews
4.4 out of 5 stars
9
4.6 out of 5 stars
69
4.2 out of 5 stars
488
4.3 out of 5 stars
2,587
4.3 out of 5 stars
317
3.0 out of 5 stars
14
4.2 out of 5 stars
151
Price
$159.99$159.99 $119.99$119.99 $89.99$89.99 $79.99$79.99 $69.99$69.99 $129.99$129.99
Type
Headphone Amp+Equalizer Headphone Amp+Equalizer DAC+ Headphone Amp DAC+ Headphone Amp Headphone Amp + Preamp Portable Headphone Amp DAC+ Headphone Amp
MAX Power Output
3.5MM: 280mW, 4.4MM: 1100mW 2400mW@32 Ohm - - 120mW@32 Ohm 138mW @32Ω 15mW @300Ω 120mW(SE); 220mW(BAL)
Input
USB/OPT 3.5mm AUX USB-C+OPT+COA+Microphone USB + Optical + Coaxial AUX + RCA Blueooth + AUX Type C+ USB A
Output
3.5mm/4.4mm HP+3.5mm AUX/OPT 3.5mm AUX+6.35mm Headphone RCA + 3.5mm Headphone RCA + 3.5mm Headphone 3.5 mm + 6.35 mm 3.5mm Headphone 3.5mm + 4.4mm Headphone
Treble & Bass Control
THD
≤ 0.001% ≤ 0.001% <0.003% ≤ 0.01% ≤ 0.03% ≤ 0.001% ≤ 0.0006%(SE) ≤ 0.001%(BAL)
SNR
3.5mm: 120dB; 4.4mm: 115dB ≥ 108dB >110dB ≥ 105dB ≥ 95dB ≥ 95dB ≥120dB
Terminating Impedance
16-300 Ohms 16-300 Ohms 16-300 Ohms 16-200 Ohms 16-300 Ohmss 16-300 Ohms 16-300 Ohms

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