All-in-One Desktop HiFi DAC & Headphone Amplifier for Music, Gaming & Entertainment

The Fosi Audio K7 Desktop DAC Headphone Amplifier is a premium all-in-one desktop DAC and headphone amplifier designed for audiophiles, gamers, music lovers, and content creators seeking high-resolution sound, powerful headphone amplification, and versatile connectivity in a compact desktop solution.

Engineered from extensive feedback from headphone HiFi and gaming enthusiasts, the K7 combines the AK4493S DAC chipset, XMOS XU208 USB processor, and TPA6120 headphone amplification for immersive audio performance with low distortion, high dynamic range, and exceptional detail retrieval.

Whether you’re gaming, streaming music, working, or building a desktop HiFi setup, the K7 delivers powerful and refined sound for every scenario.

Audiophile-Grade AK4493S DAC Architecture

At the heart of the K7 is the premium AKM AK4493S DAC chipset paired with the XMOS XU208 USB processor for advanced high-resolution audio decoding.

Hi-Res Audio Support:

• PCM up to 384kHz / 32bit
• Native DSD256 playback
• XMOS XU208 USB interface
• High dynamic range performance
• Low distortion audio reproduction

This premium DAC platform delivers:

• Clear and detailed vocals
• Deep controlled bass
• Smooth treble extension
• Excellent stereo imaging
• Wide soundstage presentation

Perfect for:

• Hi-Res music streaming
• Lossless audio playback
• Audiophile desktop setups
• Gaming immersion
• Studio-quality listening

Powerful Headphone Amplification

The K7 includes powerful TPA6120 headphone amplification capable of driving both sensitive IEMs and demanding full-size headphones.

Output Power:

• Up to 2100mW output power

Headphone Outputs:

• 3.5mm Single-Ended Output
• 4.4mm Balanced Output

The high-power amplifier section provides:

• Better headphone control
• Improved dynamics
• Clean transient response
• Enhanced detail retrieval
• Wider soundstage performance

Ideal for:

• Audiophile headphones
• Planar magnetic headphones
• Gaming headsets
• High-impedance headphones
• Balanced audio setups

Bluetooth aptX HD & aptX Low Latency Support

The K7 supports high-quality wireless audio streaming with advanced Bluetooth codecs.

Bluetooth Features:

• aptX HD support
• aptX Low Latency (LL)
• Stable wireless streaming
• Improved audio detail
• Reduced gaming latency

Perfect for:

• Wireless music streaming
• Mobile device connectivity
• Low-latency gaming audio
• Convenient desktop listening

Versatile Desktop Audio Connectivity

The K7 is designed to serve as the central hub of a modern desktop audio system.

Inputs:

• USB-C
• Optical
• Coaxial
• Bluetooth
• 3.5mm Microphone Input

Outputs:

• 4.4mm Balanced Headphone Output
• 3.5mm Single-Ended Headphone Output
• RCA Output

This flexible connectivity allows seamless integration with:

• Headphones
• Powered speakers
• Desktop amplifiers
• Gaming consoles
• PCs and laptops

Designed for Gaming & Entertainment

The K7 is optimized not only for music listening but also for immersive gaming and multimedia experiences.

Gaming Features:

• Low-latency Bluetooth audio
• Detailed positional sound
• Powerful headphone amplification
• Clear communication support via mic input
• Immersive gaming soundstage

Perfect for:

• Competitive gaming
• Streaming
• Movies and entertainment
• Voice communication
• Multiplayer gaming

User-Friendly Desktop Design

The K7 combines premium functionality with intuitive operation.

Design Features:

• Dual large control knobs
• Five shortcut buttons
• High-resolution status display
• Ergonomic angled chassis
• Easy-access controls

The interface allows quick adjustment of:

• Volume
• Input selection
• Audio modes
• Playback settings

Making it ideal for both casual users and advanced audiophiles.

Durable All-Metal Aluminum Construction

Built from solid aluminum alloy, the K7 offers excellent durability and premium desktop aesthetics.

Build Quality Highlights:

• Full metal chassis
• Wear-resistant finish
• Electromagnetic interference shielding
• Premium metallic appearance
• Compact desktop footprint

The robust construction improves durability while reducing unwanted signal interference for cleaner audio performance.

Technical Specifications

• Product Type: Desktop DAC / Headphone Amplifier
• DAC Chipset: AK4493S
• USB Processor: XMOS XU208
• Headphone Amplifier: TPA6120
• PCM Support: Up to 384kHz / 32bit
• DSD Support: DSD256
• Output Power: Up to 2100mW
• Inputs:
  • USB-C
  • Optical
  • Coaxial
  • Bluetooth
  • 3.5mm Microphone Input
• Outputs:
  • 3.5mm Single-Ended Headphone
  • 4.4mm Balanced Headphone
  • RCA Output
• Bluetooth Codecs:
  • aptX HD
  • aptX Low Latency
• Signal-to-Noise Ratio: ≥121dB
• THD+N: ≤0.0002%
• Noise Floor: ≤6.5μV
• Input Voltage: DC 12V
• Chassis Material: Aluminum Alloy

Features

• AK4493S HiFi DAC chipset
• XMOS XU208 USB processor
• TPA6120 headphone amplifier
• 4.4mm balanced headphone output
• Bluetooth aptX HD & LL support
• PCM 384kHz / DSD256 decoding
• Up to 2100mW output power
• USB, optical, coaxial & Bluetooth inputs
• Gaming and entertainment optimized
• Premium all-metal desktop design

Colour	Black, Silver