--- product_id: 611044029 title: "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" brand: "fosi audio" price: "₩276728" currency: KRW in_stock: true reviews_count: 13 url: https://www.desertcart.kr/products/611044029-sk02-dac-amp-headphone-amplifier-desktop-usb-c-to-aux store_origin: KR region: South Korea --- # Supports 16-300Ω headphones Plug & play USB/Optical input 1100mW balanced output power 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 **Brand:** fosi audio **Price:** ₩276728 **Availability:** ✅ In Stock ## Summary > 🎶 Elevate your desktop audio game — hear every detail, feel every beat. ## Quick Answers - **What is this?** 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 by fosi audio - **How much does it cost?** ₩276728 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/611044029-sk02-dac-amp-headphone-amplifier-desktop-usb-c-to-aux) ## Best For - fosi audio enthusiasts ## Why This Product - Trusted fosi audio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Intuitive Control Hub:** Multi-function knob and quick-switch buttons put volume, gain, and mode at your fingertips. - • **Power Meets Precision:** Unleash 1100mW of crystal-clear balanced audio for immersive sound. - • **Seamless Connectivity:** Plug-and-play USB-C and optical inputs for instant high-res audio on any device. - • **Built to Last & Impress:** Sleek CNC-machined aluminum alloy chassis combines durability with minimalist elegance. - • **Universal Compatibility:** Effortlessly drives headphones from 16 to 300 ohms with tailored gain control. ## Overview The Fosi Audio SK02 is a compact yet powerful DAC headphone amplifier featuring ESS SABRE ES9038Q2M DAC and SGM8262 op-amps. It supports high-resolution audio decoding up to DSD256 and PCM 32bit/384kHz, delivering up to 1100mW balanced output power. Designed for versatility, it offers USB-C and optical inputs, 3.5mm single-ended and 4.4mm balanced outputs, and adapts to headphones with impedance from 16 to 300 ohms. Its driver-free plug-and-play design, multifunctional control knob, and durable CNC-machined aluminum body make it an elegant and reliable centerpiece for any professional or audiophile desktop setup. ## Description Guided by our mission of "Redefining HiFi with Unmatched Value", Fosi Audio continues to fuel its passion for the Hifi industry, ramp up R&D efforts, and co-create new HiFi equipment with users. We pledge to bring more amazing Hifi gear with high value for the price, innovative design, cutting-edge technology, and premium quality, to audiophiles worldwide. 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: 190mW@32Ω, 4.4mm: 755mW@32Ω Terminating Impedance: 16-300Ω It effortlessly fits any desktop space, adding a touch of elegance and harmony to every corner. Provides stable and strong power for high-impedance headphones and IEMs to perform at their best. Enhances audio clarity with deep bass to clear highs for an immersive listening experience. Adapts to 16-300Ω impedance headphones with flexible gain for a tailored auditory experience. Combines play, pause, mute, volume controls for a streamlined process, enhancing user experience. Made with aluminum alloy using advanced CNC molding, achieving a robust yet refined unibody design. Easily meet your diverse needs, making it the ideal companion for your headphones and IEMs. With the outstanding high resolution, the SK02 headphone amplifier brings you a crystal clear sound. Robust output power, high signal-to-noise rate and ultra-low noise floor. The Fosi SK02 masterfully restores sound, redefining the ultimate standards of auditory enjoyment. Instantly lit PCM and DSD indicators show audio format, helping your focus on every music detail. Equipped with dedicated buttons for high/low gain and input source; a simple touch switch settings, crafting perfect sound. Efficient connectivity and clear transmission for seamless high-resolution audio, ushering in a new era of high-quality audio transmission. Dual enjoyment in one: The seamless fusion of AUX and optical outputs provides a professional audio experience for various devices. Precision-engineered for durability and reliability, providing a smooth and comfortable operational experience. SK02 SK01 Q4 K5 Pro DS1 DS2 ZD3 ## Features - 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 ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0CRB676R5 | | Audio Output Mode | Single-Ended, Balanced | | Best Sellers Rank | #38,453 in Electronics (See Top 100 in Electronics) #71 in Headphone Amps | | Brand Name | Fosi Audio | | Compatible Devices | Laptop, Computer, CD player, TV, Projector | | Customer Reviews | 4.5 4.5 out of 5 stars (364) 4.5 out of 5 stars | | Interface | 3.5mm, 4.4mm, Optical, USB | | Item Weight | 350 g | | Manufacturer | Fosi Audio | | Material Type | Aluminum Alloy | | Model | SK02 | | Mounting Type | Tabletop/Desktop | | Number Of Channels | 2 | | Number Of Items | 1 | | Number Of Packs | 1 | | Number Of Pins | 35 | | Part Number | SK02 | | Unit Count | 1 Count | | Warranty Description | 24 Month Manufacturer | ## Product Details - **Brand:** Fosi Audio - **Interface Type:** 3.5mm, 4.4mm, Optical, USB - **Mounting Type:** Tabletop/Desktop - **Number of Channels:** 2 - **Number of Pins:** 11 ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/514vFpzU+fL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Compact Desk DAC That Packs Real Power *by on Reviewed in the United States August 8, 2026* I picked up the Fosi Audio SK02 because my PC’s built-in audio was starting to feel limited, and I wanted a small desktop unit that could drive my headphones better while also handling optical input from my setup. The mix of USB-C, optical, 3.5mm, and 4.4mm balanced outputs looked practical for everyday use without taking up much space.Going in, I expected a clean-sounding DAC/amp that could push regular headphones and some planars without noise or strain, plus basic preamp use. It mostly delivered. The aluminum case feels solid and sits steady on the desk. The big volume knob is smooth, and the gain switch plus LEDs make it easy to see what’s going on. Plug in via USB-C or optical and it just works—no drivers needed on my end.Sound is neutral and clear. Bass stays tight, mids are open, and it has enough power on the balanced 4.4mm side to give harder-to-drive headphones some headroom. I use it for music and gaming, and the quieter background helps pick out details better than the motherboard jack. The line out also works fine if I want to feed a powered speaker or another amp.For daily desk use it’s handy—connect the PC or a TV via optical, switch headphones quickly, and keep the volume independent. Value feels solid for what you get in power and inputs at this price point.A few things keep it from being perfect. The treble can come across a bit linear or bright depending on the headphones. It always needs USB-C power, so it’s not fully portable. And there’s no app or fancy tuning options if you like tweaking on the fly.It met my main expectations for cleaner desktop audio and enough power without complications. Not the last word in refinement, but a practical step up from basic PC sound that does the job well. ### ⭐⭐⭐⭐⭐ Yes. Excellent *by on Reviewed in the United States December 11, 2024* Excellent sound, and as a desktop DAC/Amp, this thing should be fed by a USB port with some real power capacity (or at least not a portable like a tablet or phone).They seem to be able to drive my 300Ω Sennheiser to dangerous volume levels without distortion. I'm not in the habit of listening at that kind of volume for very long.I don't hear any noise or distortion at any volume, in fact - the DAC & Amp are both excellent. The build quality appears top notch, though the case is clearly an area where some cost cutting happened (it's a bit of a generic case, but serviceable).The bottom of the case has some non-slip silicone pads integrated into it. I wish it covered the whole bottom, but it's still better than nothin'. It's also nice to have an optical in. I'm not sure if I'll ever use it, but options are good.I love being able to use the push knob to pause/play skip music, and even turn the SK02 off (rather than an always-on power sink).I bought mine with a package deal that was cheaper to get an Orange knob - I'm not entirely sold on the look, but it's certainly easier to find the knob.The SK02 a bigger amp than the diminutive Fosi DS2, and is definitely louder. It also has more features. I've got both, love both - they're different horses for different courses. ### ⭐⭐⭐⭐⭐ Like Z Review, this is Epic *by on Reviewed in the United States October 31, 2024* 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​ ## Frequently Bought Together - 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 - Fosi Audio SK01 Headphone Amplifier Equalizer Preamp with Bass Midrange Treble Tone Control and Loudness Compensation Portable Class A Analog Amp for Electric Guitar Instrument with 3.5mm 6.35mm Jacks --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/611044029-sk02-dac-amp-headphone-amplifier-desktop-usb-c-to-aux](https://www.desertcart.kr/products/611044029-sk02-dac-amp-headphone-amplifier-desktop-usb-c-to-aux) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-08-15*