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

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​

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.

Accoppiato a Sennheiser HD560s, riscoperto le cuffie che già adoravo.spinge che fa pauraconsiglio a tutti coloro che hanno cuffie ad impedenze assurde (120 ohm le mie) per i DAC integrati, in più essendo sia DAC che Amplificatore migliora sia la qualità audio in se, che il problema di chi, come me, ha cuffie difficilmente pilotabili.lo adoro, consiglio

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 goodSound 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.

The device is built like a tank and weighs about 350 gm. The form factor and the hype is what made me try it.The volume knob can also be used to turn on/off just like how it works on the Fosi ZA3 Amplifier.The 3.5 mm headphone jack is flimsy and does not inspire confidence that it would last.I had the device fed with a high quality linear supply through the 5v input and used the WIIM Pro Plus as a source via the optical connection for the cleanest signal.I also tested it with AKG N60 NC in low gain, the Sennheiser HD25 II and Sennheiser HD650 in high gain. I have a lot more demanding and high resolution cans but this did not inspire me to try them all.The ESS DAC used may be state-of-the-art but the headphone amp sounds mediocre at best. It sounds thin (lacking body), low dynamics, narrow instrument separation, minimal vocal texture and tone, very cold and almost sterile sounding product.It's very likely that these are targeted for use as a stand alone budget DAC, competing with the likes of SMSL SU-1 but with more features and functionality thrown in, or as an all-in-ones for IEMs and other low impedance portable solutions for the digital nomads.It did not work for me as a dedicated desktop solution although this is exactly the form factor and functionality I was looking for.In my books this sounds like good quality Radio Fidelity! YMMV...