Fosi Audio SK02 DAC Amp Headphone Amplifier Desktop USB C to AUX Digital to Analog Audio Converter Adapter Preamp Optical to 3.5mm 4.4mm Balanced Combo for Home Audio System : ��غ��.co.uk: Electronics & Photo

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Fosi Audio SK02 DAC Amp Headphone Amplifier Desktop USB C to AUX Digital to Analog Audio Converter Adapter Preamp Optical to 3.5mm 4.4mm Balanced Combo for Home Audio System

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4.3 (118)

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Brand	Fosi Audio
Colour	black
Compatible devices	Computers, Laptops, CD Players, TVs, Projectors, Headphones, Active Speakers, Amplifiers
Material	Aluminum Alloy
Output wattage	0.34 Watts

About this item

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.

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Product information

Technical Details

Product Dimensions

‎12 x 5 x 4 cm; 350 g

Item model number

‎SK02

Colour

‎black

Compatible Devices

‎Computers, Laptops, CD Players, TVs, Projectors, Headphones, Active Speakers, Amplifiers

Connector

‎USB-C, 3.5mm Jack, 4.4mm Balanced

Material Type

‎Aluminum Alloy

Output Wattage

‎0.34 Watts

Power Source

‎Corded Electric

Voltage

‎230 Volts

Item Weight

‎350 g

Additional Information

ASIN

B0CRB676R5

Customer Reviews

4.3 118 ratings

4.3 out of 5 stars

��غ�� Rank

20 in Headphone Amplifiers

Date First Available

2 Jan. 2024

Warranty & Support

��غ��.com Return Policy:Regardless of your statutory right of withdrawal, you enjoy a 30-day right of return for many products. For exceptions and conditions, see Return details.

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From the brand

Discover Fosi Audio - Your HiFi Solution! We're a tech-driven brand, crafting innovative audio products around the world. Our vision: Affordable excellence for each consumer. Our mission: Redefining HiFi with cost-effective innovations. Join Fosi Audio on this unique audio journey!
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Get to know about Fosi Audio

For the past 5 years, we have been designing and developing audio products for real life, aiming to provide a perfect blend of premium acoustic performance with a modern, elegant design.

Why do we love what we do?

We’re not limited by what’s possible now. With a bold vision for the future of audio products, we painstakingly develop advanced technology and innovative research to make it a reality.

Why choose Fosi Audio?

We use meticulous production technology, combined with low-key modern industrial design, to present the sound as clear and pure as flawless crystal.

Product Description

Fosi Audio SK02 Headphone Amplifier/Preamp

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

Minimalist Desktop Audio

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

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

Enhances audio clarity with deep bass to clear highs for an immersive listening experience.
High and Low Gain Modes

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

Multifunctional Knob for Easier Control

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

Made with aluminum alloy using advanced CNC molding, achieving a robust yet refined unibody design.
3.5mm Single-End and 4.4mm Balanced

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

SABRE ES9038Q2M DAC & SGM8262 Op-Amps

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

Robust output power, high signal-to-noise rate and ultra-low noise floor.
Supports High-Res PCM384kHz & DSD256

The Fosi Audio SK02 restores sound, redefining the ultimate standards of auditory enjoyment.
Colorful Indicators, Visible Music Formats

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

Fosi Audio SK02 Desktop DAC Headphone Amp

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

	SK02	SK01	PH05	K5 PRO	Q4	P2	DS1
Customer Reviews	118	210	32	825	2,845	412	283
Type	Headphone Amp+Equalizer	Headphone Amp+Equalizer	5.0 CH Headphone Amp	DAC+ Headphone Amp	DAC+ Headphone Amp	Headphone Amp + Preamp	DAC+ Headphone Amp
MAX Power Output	3.5MM: 280mW; 4.4MM: 1100mW	2400mW@32 Ohm	310mW@32 Ohm/36mW@300 Ohm	500��ɰ�32Ω	250��ɰ�32Ω	120mW@32 Ohm	120mW(SE); 220mW(BAL)
Input	USB/OPT	3.5mm AUX	3.5mm AUX	USB-C+OPT+COA+Microphone	USB + Optical + Coaxial	AUX + RCA	Type C
Output	3.5mm/4.4mm HP+3.5mm AUX/OPT	3.5mm AUX+6.35mm Headphone	3.5mm Headphone*5	RCA + 3.5mm Headphone	RCA + 3.5mm Headphone	3.5 mm + 6.35 mm	3.5mm + 4.4mm Headphone
Treble & Bass Control	✘	✔	✘	✔	✔	✘	✘
THD	≤ 0.001%	≤ 0.001%	0.001%	<0.003%	≤ 0.01%	≤ 0.03%	≤ 0.0006%(SE) ≤ 0.001%(BAL)
SNR	3.5mm: 120dB; 4.4mm: 115dB	≥ 108dB	105db	>110dB	≥ 105dB	≥ 95dB	≥120��
Terminating Impedance	16-300 Ohms	16-300 Ohms	16-300 Ohms	16-300 Ohms	16-200 Ohms	16-300 Ohms	16-300 Ohms

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Product details

Product Dimensions ‏ : ‎ 12 x 5 x 4 cm; 350 g
Manufacturer ‏ : ‎ Fosi Audio
ASIN ‏ : ‎ B0CRB676R5
Item model number ‏ : ‎ SK02
Country of origin ‏ : ‎ China

Customer reviews:
4.3 118 ratings

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Customer reviews

118 global ratings

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Richard Bloomfield
Sounds fantastic connected to a WiiM Mini streamer
Reviewed in the United Kingdom on 9 January 2025
Verified Purchase
I have my Fosi Audio DAC Amp connected using an optical connector to a WiiM Mini streamer, and it works as a great combination on the desk of my home office. The amp easily drives my Beyerdynamic headphones and sounds fantastic. I love the fine grain control of the volume knob.

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Helpful

Stooshie
Significant Upgrade To Desktop Listening
Reviewed in the United Kingdom on 29 July 2024
Verified Purchase
Smaller form factor ideal for audio at your desk.
Flawless sound, whatever headphones you are using, or passthrough to an amp.
Solid build quality, performance and usability. Powered by USB.
Balanced or single-ended output... it just sounds really good

Sound reproduction is better than you are likely able to hear.
Yes, you could spend more on something else... but you really don't need to.
Take the money you save and upgrade the headphones that you plug into it, if you need to.

Overall, an excellent product.

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2 people found this helpful

Helpful

Steve
Amazing Power Just From USB
Reviewed in the United Kingdom on 29 September 2024
Verified Purchase
Easily drives my Audeze LCD2-CLASSICS. Nice smooth sound, no frills, just the things that matter. I doubt you'll find a balanced out dac amp that sounds as good as this for anywhere near this price point.

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One person found this helpful

Helpful

Mickey Moo
Essential for Serious Mobile device listening
Reviewed in the United Kingdom on 29 February 2024
Verified Purchase
I listen to a lot of music from my laptop which is not ideal for audiophile quality. You will never get the same results like a full separates system. How can you make an improvement?
This is the answer at an affordable price. I listen to a lot of classical music, so which recording did I use from my streaming provider. 1st was Tchaikovsky's Nutcracker Ballet performed by RCO/Dorati (phps). The sound staging and separation was greatly improved using my trusty Sennheiser's Open Ear Headphones. Instruments were pronounced and clear like I had not heard before. Bright and lively. 2nd recording was Haydn's Creation performance with Hogwood. A mass of Instruments and chorus singers. The fosi held its head high and tackled such forces with ease. For Classical music lovers I highly recommend this box of magic.

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2 people found this helpful

Helpful

Tomas
For this price, thats gem
Reviewed in the United Kingdom on 1 September 2024
Verified Purchase
Iv got this and ifi zen dac v2, and sound different is very small, for gaming i prefer fosi

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Tomas

For this price, thats gem

Reviewed in the United Kingdom on 1 September 2024
Iv got this and ifi zen dac v2, and sound different is very small, for gaming i prefer fosi

Images in this review

Helpful

Tom Holland
Happy
Reviewed in the United Kingdom on 8 May 2024
Verified Purchase
Pros:
1. One cable for power and music connecting to my computer.
2. Doesn't take up much space on my desk.
3. Made of metal, feels like it will last a long time.

Cons:
Can't think of anything, but I haven't tested the balance port yet just single.

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Helpful

Top reviews from other countries

��غ�� Customer
Like Z Review, this is Epic
Reviewed in the United States on 31 October 2024
Verified Purchase
The Fosi Audio SK02 DAC amp is a compact, affordable option with a clean, neutral sound signature, making it ideal for detail-oriented listening. Powered by the ESS Sabre ES9038Q2M DAC, it offers clear audio with a slight emphasis on mid-to-high frequencies, which suits analytical listening but can be bright for sensitive ears. It includes both 3.5mm single-ended and 4.4mm balanced outputs, delivering up to 1100mW to power even demanding headphones. Its sturdy aluminum build, versatile connectivity, and intuitive volume control make it a practical choice for budget-conscious users

Read more
Neki Prime
A surprisingly great DAC/AMP from Fosi without breaking the bank as much!
Reviewed in Canada on 22 May 2024
Verified Purchase
Only started getting into the Audio space and got the KZ-ZS10 Pro 2 and this DAC/AMP. I also tried the Fosi K5 Pro DAC/AMP as well but returned that one as the SK02 (this one) is more powerful and provides even better audio quality than I have anticipated. Keep in mind of the Hz you set Windows on as not all apps works with 32bit/384000 hz. But even then, I could tell the difference between the 2 DAC/AMPs right away and can easily recommend this as it sounds so much better overall.

Read more

Neki Prime

A surprisingly great DAC/AMP from Fosi without breaking the bank as much!

Reviewed in Canada on 22 May 2024
Only started getting into the Audio space and got the KZ-ZS10 Pro 2 and this DAC/AMP. I also tried the Fosi K5 Pro DAC/AMP as well but returned that one as the SK02 (this one) is more powerful and provides even better audio quality than I have anticipated. Keep in mind of the Hz you set Windows on as not all apps works with 32bit/384000 hz. But even then, I could tell the difference between the 2 DAC/AMPs right away and can easily recommend this as it sounds so much better overall.

Images in this review

Miklos Rozsahegyi
Perfect!
Reviewed in Italy on 21 January 2025
Verified Purchase
Good prise and quality

Read more
Serhii Vatamaniuk
Incredible sound!!
Reviewed in Spain on 19 December 2024
Verified Purchase
Amazingly good dac, highly recommend, value per cost is insane!

Read more
Eiffes Pascal
Good device for most headphones
Reviewed in Germany on 13 December 2024
Verified Purchase
I ordered the Fosi Audio SK02 a few weeks ago by ��غ��.
It arrived the day after in very good condition. I needed a headphone amp dac for my TV. After seeing the rezensions i decided to buy it. I connected the SK02 on my TV through the optical out which gives me a very good sound, it is loud enough to run my DT 770 pro, even on my laptop it sounds good when conncted on the usb-c, no drivers needed for Windows 11. I recommand this device if you don't want to use a bluetooth headphone.

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Fosi Audio SK02 DAC Amp Headphone Amplifier Desktop USB C to AUX Digital to Analog Audio Converter Adapter Preamp Optical to 3.5mm 4.4mm Balanced Combo for Home Audio System

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About this item

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Product information

Technical Details

Additional Information

Warranty & Support

Feedback

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From the brand

Fosi Audio ZD3

Fosi Audio SK02

Fosi Audio VOL20

More home audio amplifier

Fosi Audio PH05

Fosi Audio DS1

Fosi Audio DS2

More home audio amplifier

Get to know about Fosi Audio

Why do we love what we do?

Why choose Fosi Audio?

Product Description

Compact Yet Powerful

Fosi Audio SK02 Desktop DAC Headphone Amp

Premium Sound, Audiophile's Choice

Minimalist Desktop Audio

Fully Unleash Exceptional Power

Ideal Partner for Amplifiers

High and Low Gain Modes

Multifunctional Knob for Easier Control

All Aluminum Alloy Chassis

3.5mm Single-End and 4.4mm Balanced

SABRE ES9038Q2M DAC & SGM8262 Op-Amps

Crafted for Audiophiles

Supports High-Res PCM384kHz & DSD256

Colorful Indicators, Visible Music Formats

One-Button Gain and Input

Supports Optical & USB Input

3.5mm AUX/Optical

Solid Aluminum Alloy Knob

Parameter Comparison

Looking for specific info?

Product details

Similar brands on ���غ���

Customer reviews

Review this product

Images in this review

Reviews with images

For this price, thats gem

Top reviews from United Kingdom

There was a problem filtering reviews right now. Please try again later.

5.0 out of 5 stars Sounds fantastic connected to a WiiM Mini streamer

5.0 out of 5 stars Significant Upgrade To Desktop Listening

4.0 out of 5 stars Amazing Power Just From USB

5.0 out of 5 stars Essential for Serious Mobile device listening

5.0 out of 5 stars For this price, thats gem

For this price, thats gem

Images in this review

5.0 out of 5 stars Happy

Top reviews from other countries

5.0 out of 5 stars Like Z Review, this is Epic

5.0 out of 5 stars A surprisingly great DAC/AMP from Fosi without breaking the bank as much!

A surprisingly great DAC/AMP from Fosi without breaking the bank as much!

Images in this review

5.0 out of 5 stars Perfect!

5.0 out of 5 stars Incredible sound!!

5.0 out of 5 stars Good device for most headphones

��غ��

Similar brands on ��غ��

Sounds fantastic connected to a WiiM Mini streamer

Significant Upgrade To Desktop Listening

Amazing Power Just From USB

Essential for Serious Mobile device listening

For this price, thats gem

Happy

Like Z Review, this is Epic

A surprisingly great DAC/AMP from Fosi without breaking the bank as much!

Perfect!

Incredible sound!!

Good device for most headphones