Aimed at audiophiles and music enthusiasts, the high-fidelity FiiO K11, styled in silver, is a compact desktop USB DAC and headphone amplifier designed to faithfully reproduce your music when listening to audio from your computer, smartphone/tablet, or other digital music player. The K11 employs the high-resolution CS43198 DAC to deliver rich audio details and a superior performance up to a 384 kHz sampling rate and native DSD256.

Equipped with optical and coaxial digital inputs, a USB-C port, RCA analog line outputs, and two headphone jacks (1/4" unbalanced and 4.4mm balanced), the K11 acts as a bridge between your computer, phone, speakers, and headphones, allowing them to work together seamlessly. Switchable low, medium, and high gain levels are available, enabling you to use the amplifier at comfortable volume levels with almost any headphones.

For Computers, Phones, Music Players    High-Resolution CS43198 DAC    SA9312L USB Controller    Supports 384 kHz / 32-Bit / DSD256    Coaxial/Optical Inputs    1440mW Headphone Amplifier    RCA Line Outputs    Low-, Medium-, High-Gain Levels    RGB LED Indicator    External Power Supply with AC Adapter

• USB (USB connection to phones for decoding does not consume the phones battery)
• Optical input
• Coaxial input and output (Coaxial share same physical connector. Coaxial output can only be used in USB Mode)

Under a 32-ohm load, the K11 is capable of pushing 1400mW under balance modes. This allows it to easily drive many hi-fi earphones and headphones to fully unlock their potential.

The K11 has three separate gain levels, each with its own volume curve. This provides a better listening experience with various types of headphones, whether you are using sensitive earphones or hard-to-drive over-ear headphones.

Within the K11's slim build lies a special audio circuit designed for great sound quality. This is backed by more than 16 low-noise LDOs for precise voltage stabilization and powered by an external 12V switching power supply. All of this leads to a purer and more robust supply of power, leading to stable high-quality audio and truly enjoyable music, all of the time.

The slim aluminum alloy body allows you to easily place the K11 anywhere, making it easier to complement the rest of your desk. Thanks to the silicone antislip pad, the K11 rests stably and firmly on your table.

A custom, high-contrast display and durable VA display allows you to easily see the sampling rate, volume, gain, or output mode with just a glance.

FiiO logo is illuminated with RGB lighting, giving you a quick way to identify the sampling rate of the current audio being played back. Six LED strips work in conjunction with a carefully placed reflective film and parts of the body designed to reflect light to make the light show uniform and elegant.

• In the K11's minimalist design, the volume knob acts as a crucial source of total control. The K11's multifunction volume knob is used to power the device on and off, accessing menu operations, making volume adjustment, and other functions.
• The knob is designed so that you can quickly execute various complex actions by simply pressing and turning the knob. You can also quickly switch between LO/PO modes by double-pressing the knob, making it easier for you to appropriately connect to different headphones or audio setups.

The K11 used in USB DAC mode does not require a driver on Widows 10 and above and can also be used with video game consoles such as PS5 and the Switch. Simply plug and play for worry-free usage, whether you are enjoying music or being immersed in games.

Related Questions and Answers

Q: 1. Could I sufficiently power these with a FiiO A5?

A: Absolutely! Output Power: 800 mW (32 Ohms / THD 1%) ≥150 mW (300 Ohms / THD 1%)

Q: 2. Does this work over seas

A: The included 12 VDC supply is 120 VAC 60 Hz only. It is not compatible with most electrical systems outside North America.

Q: 3. Will this adapter work for the Fujifilm X-T4?

A: Yes. The usb-c port is for power and pc- connection as well.

Q: 4. Can this be used for/with my computer desktop speakers?

A: Yes, the Creative Labs Sound BlasterX G1 can also be used with your desktop speakers.

Q: 5. Does it have any voltage gain? I'd like something to make an existing headphone output louder.

A: Yes it does. I often run it from the headphone output on my mixer and you do get a reasonable increase in volume when turned right up on the HA43

Q: 6. Are the inputs balanced or unbalanced?

A: The HA43 features unbalanced stereo inputs and outputs.

Q: 7. how do i hook up a subwoofer to this amp, there is no sub-out?

A: The A1200SL is more meant for Music Audio Enthusiasts who are connecting to Higher end Audiophile Grade speakers. It is common among most Higher End Integrated Amplifiers to not include a Subwoofer connection. The Denon PMA-A110 for instance also does not provide a Subwoofer out.

Q: 8. Does it have Dolby? Most people still with cassettes are recorded with Dolby that would consider buying...

A: The FiiO CP13 Portable Stereo Cassette Player (Red/Silver) does not have Dolby.

Q: 9. Dose it work on original xbox one

A: Yes it will work on the original Xbox One.

Q: 10. Will these work with the new Cambridge dac, from the headphone jack of the PC?

A: These headphones would work with a DAC such as the DACMagic 200M BH #CAC11217.