Product details

  • Versatile DAC Amp: The K7 is designed for both HiFi headphone audiophiles and music lovers. It can serve as a powerful hub for building your desktop audio system. Whether your're enjoying music, gaming or working, the K7 handles it all with ease.

  • Audiophile-Grade Chipset: Equipped with the AK4493S DAC, XMOS XU208 USB processor, and TPA6120 headphone amps, the K7 supports high-resolution decoding up to PCM 384kHz/32bit and DSD256. With up to 2100mW output power, it easily drives demanding headphones.

  • Comprehensive Connectivity: Supports USB-C, coaxial, optical, Bluetooth aptX HD/LL and 3.5mm microphone input. Outputs include 4.4mm balanced, 3.5mm single-ended, and RCA—easily connecting to headphones, powered speakers, or amplifiers for desktop setups.

  • User-Centric Design: Compact yet user-friendly, the K7 features dual large control knobs, five shortcut buttons, and an angled chassis for ergonomic comfort. A high-resolution display shows real-time status, making operation easy and intuitive.

  • Durable All-Metal Build: Crafted from solid aluminum alloy, the K7 features a rugged, wear-resistant chassis with a sleek metallic finish and enhanced electromagnetic interference shielding.

FAQs

Please read our FAQs page to find out more.

How to: Choose the right banana plug?
  • Closed Screw Type. All Fosi amplifiers use standard-sized speaker terminals (4mm pins).
  • Easy to wire up and solidly connect to amplifier and passive speaker.
  • If they do not fit, use a little force to tighten the plugs.
  • Fosi Audio Banana Plugs (Copper, Silver/Gold Plated): http://bit.ly/40Djq0U, https://bit.ly/3MkPL8t
  • Please watch tutorial videos: https://youtu.be/6pYhoqDlvNw / https://youtu.be/RGvBgGAwS9k
How to Diagnose Power Supply Failure?
  • The following situations may cause this issue
  • Case 1: The LED on the power supply does not light up; Case 2: Amp/Preamp does not turn on; Case 3: When plugged into the Amp, both light on the amp & power supply start blinking; Case 4: Amp/Preamp make noise; Case 5: Sound shuts off by itself
  • Possible solution
  • Check if the power supply is illuminated when plugged into AC by itself.

    Plug power supply into a different socket.

    Test the adapter with a meter.

    Try a different power supply (within a range of DC input).

    Test the included power supply on other electrical equipment.

    Please watch the tutorial video by clicking on the link provided. https://youtu.be/yCjygS03zTE
What is a GaN?
  • The GaN supply has a power output of 240W.
  • Offers overload and over-temperature protection.
  • The 48V 5A GaN power supply is also available on Amazon.

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