FiiO K11 Desktop 1400W Power Balanced Headphone DAC & Amplifier 384kHz/24Bit DSD256 for Home Audio/PC 6.35mm/4.4mm/RCA/Coaxial/Optical (Silver)

The Fiio K11 has been a phenomenal addition to my computer setup. I was looking for a way to improve the sound quality for all my audio devices, and this DAC/amp has truly exceeded my expectations.​This device isn't just for one type of gear; it enhances the audio for everything I own. My headphones, headsets, IEMs, and even my desktop speakers all sound noticeably better. The K11 brings out more clarity, detail, and power, making every listening experience more enjoyable.​It's a fantastic value for anyone who cares about sound quality. If you're looking to take your audio setup to the next level and are wondering where to start, the Fiio K11 is an absolute must-have. It's a simple and effective upgrade that makes a huge difference.

I use 80 ohm Beyerdynamics DT 770 headphones to listen to music. They aren't particularly hard to drive, but when using my PC's audio jack I can definitely hear some extra background noise.I like the coloration of these headphones. So, I decided to look up reviews for decent affordable DAC/headphone amps, hoping I might find something that would sound a bit cleaner than the output from my PC. After watching a few comparison videos, I settled on Fiio's K11. I was already familiar with the brand from their FLAC players, and the price was reasonable, so I was hopeful that this would make things a bit better.Boy, do I feel silly for not trying one of these things sooner! It doesn't change the character of the headphones, and it has absolutely NO noise during the quiet parts of songs. I really didn't realize just how sensitive I was to that noise until it was gone. I'm not sure what the right words are to describe the difference--the music just feels right now.As a little bonus, this definitely provides better volume control. It has tons of room for fine tuning volume per song when needed. It also worked perfectly plug and play with CachyOS Linux.

The FiiO K11 is a compact, feature-rich desktop DAC/amp that aims to deliver high-quality audio without breaking the bank. Positioned as an entry-level unit in FiiO’s lineup, it offers a sleek design, versatile connectivity, and enough power to drive most headphones—all for around $159.The sound is clean, detailed, and largely neutral—though not without quirks. While many users report a pleasant listening experience with no coloration, others have noted issues with the digital filters, describing the sound as “compressed” or “plastic” depending on the preset. Filter 4 is often cited as the most naturalThe FiiO K11 (non-R2R) is a solid entry-level DAC/amp that balances aesthetics, usability, and performance. It’s not a technical powerhouse, and audiophiles seeking absolute neutrality may find its sound signature lacking. However, for casual listeners and budding enthusiasts, it’s a fantastic starting point—especially if you value convenience and versatility.If you're looking for a clean desktop solution with balanced output and modern design, the K11 delivers. Just be aware of its quirks before diving in.

I bought this unit to replace the audio section on my PC's motherboard due to an instability problem with the hardware that could only be rectified through a cold reboot of the system. I did not buy this unit to improve sound quality. I only wanted to stop using the motherboard's onboard audio section.As an electrical engineer who has designed and built Class A amplifiers, I'm generally skeptical of the snake oil that is sold in the DAC market so I was honestly not expecting any improvement in audio quality here, but after I wired it up it took only a few seconds of listening to notice a significant increase in stereo separation / imaging, a much cleaner high end reminiscent of my class A amps, and a much lower noise floor. In short, this thing sounds fantastic and it's breathed new life into my audio collection.The volume control and display as well as the headphone jack on the front panel were not a requirement for me but they are certainly perks that are worth the slightly higher cost of this unit relative to the SMSL or other "faceless" units.One issue: I initially connected the USB-C port on the rear of the DAC to a USB-A port on my PC using a known-good cable. In this configuration my OS (Linux) refused to instantiate the USB interface and reported a power-related error. I found this strange because the unit is powered independently from an external AC/DC power brick and not the USB-C interface itself, but when I switched to a USB-C port on the PC (and hence a USB-C to USB-C cable) the interface came up and the device was recognized.

The media could not be loaded. The FiiO K11 is an impressive DAC/amp, especially for the price. The power output is excellent, easily driving most headphones with plenty of headroom. Whether you’re using low-impedance IEMs or more demanding over-ears, it delivers clean, dynamic sound.I also appreciate the multiple input options—USB, optical, and coaxial—making it easy to integrate into different setups. The digital screen and lighting are nice touches, providing clear volume levels and settings as well as lighting to help match the aesthetics around it.The downsides are that the software to update the device may be confusing to others, and I occasionally receive a loud whine from the device while off. Unsure of what could cause this, as I ended up moving it away from all other cables/devices and it still persists. The EQ/crossover settings aren’t the greatest, but are tolerable. Still, for the performance and features, it’s a solid choice for anyone looking for a powerful, flexible DAC/amp.