Product details

  • AI-Powered Smart PEQ for Effortless Sound Tuning
    Features the Smart Acoustic Assistant—no audio expertise required. Simply describe your preference or pick optimized presets for gaming, movies, or music to generate custom PEQ settings with one tap. Integrated with an open-source headphone database to align frequency response to the Harman Target, complete with web panel control for visual tuning and EQ file sharing.

  • 2300mW Massive Output with True Fully Balanced Architecture
    Premium chipset with AKM4493SEQ DAC, XMOS XU316 processor, and four OPA1612 amps supports up to PCM 768kHz/32bit & DSD512. A self-developed dual-power balanced amp circuit with multiple ultra-low-noise LDOs and capacitors keeps noise as low as 1.9μV.

  • Audiophile-Grade Flagship Chipset for Ultra-Low Distortion
    Equipped with both 6.35mm single-ended (640mW@32Ω x2) and 4.4mm balanced (2570mW@32Ω x2) outputs. The 3-level gain switch supports headphones ranging from 16Ω to 300Ω, making it perfect for almost IEMs and over-ear headphones.

  • All-Round HiFi & Gaming Compatibility with UAC 1.0 Support
    Offers versatile connections for CD transports, PCs, and gaming consoles (PS5, Nintendo Switch) via UAC 1.0 support. Features a quick double-tap control to switch outputs seamlessly between headphones and RCA active speakers, complete with independent volume memory.

  • Dynamic RGB Lighting & 1.2-Inch HD LCD Display
    Outfitted with a 1.2-inch HD LCD display for clear at-a-glance status monitoring alongside an aluminum knob and touch controls. The top ring features 9 dynamic RGB lighting modes—including real-time volume sync—with full color and sensitivity customization via the web control panel.

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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