Fosi Audio K7 Hifi DAC and Headphone Amplifier External Sound Card with AK4493SEQ Chip for Gaming
Features:
Fosi Audio K7
* Gaming HiFi DAC & Headphone Amplifier Combo
* Flagship Chipset, Sound Adjustment, and Balanced Output
K7 Performance Specs
* 2.1W + 2.1W Output Power
* Ultra-low Distortion: 0.0002%
* High-Resolution Support: PCM 384kHz & DSD256
Born for HiFi and Gaming
* K7 is an all-in-one Gaming HiFi DAC & Headphone Amplifier developed independently based on in-depth interviews with hundreds of headphone HiFi and gaming enthusiasts. It supports mainstream digital inputs including USB, optical, and coaxial, and is equipped with lossless Bluetooth codec for aptX HD/LL.
* To meet the voice communication needs of gamers during online battles, K7 also supports microphone input with noise cancellation.
* K7 is suitable for PS5 Pro, PS5, NS, PC, Mac, tablets, TVs, and projectors. With its high-power balanced headphone output and line-out capability, it easily handles music, gaming, work, and multimedia entertainment scenarios.
* Thanks to its compact and refined design paired with rich features, K7 delivers an outstanding audio and gaming experience.
Reasons to Choose K7
* Flagship AK4493SEQ DAC: Exceptional detail with ultra-high resolution
* Genuine XU208 Chip for XMOS: Designed for high-performance applications
* Dual TPA6120 Op-Amps: High-fidelity, high-power output
* Proprietary Balanced Circuit: Ultra-low distortion at 0.0002%
* Rich Connectivity: All essential ports included
* Lossless Bluetooth: Low-latency wireless transmission
* 1.5-Inch LCD Screen: High-definition display
* Full Row of Shortcut Keys: Effortless switching and control
High-Performance Audiophile-Grade Chipset
* K7 is built with the original XU208 chip for XMOS, AK4493SEQ, QCC3031 Bluetooth chip, and dual TPA6120 op-amps.
* It delivers high resolution, wide dynamics, low noise floor, low latency, and strong driving power to get more sound details and ensure a pure, flawless listening experience.
Complete Digital Decoding and Full Output Interface Options
* Equipped with RCA output, USB input, optical input, coaxial input, Bluetooth input, and DC 12V power input
* 3.5mm Single-Ended Headphone Output: Rated Power ≥ 600mW + 600mW at 32Ω
* 3.5mm Microphone Input: Intelligent noise reduction for clearer voice communication
* 4.4mm Balanced Headphone Output: Rated Power ≥ 2.1W + 2.1W at 32Ω
Hi-Res Bluetooth Lossless Codec
* Built-in QCC3031 Bluetooth chip supports codec formats for aptX HD, aptX LL, aptX, AAC and SBC
* Seamless low-latency transmission (<40ms)
* Lossless PCM audio at 24-bit/48kHz sampling rate
One Device for Both Gaming and HiFi — Versatile and Powerful
* Gaming & Entertainment: Suitable for PC, PS5 Pro, PS5, Switch, and more. It delivers precise audio decoding, supports positional audio and sound effect enhancement, helping you create an immersive gaming environment and enjoy every battle to the fullest.
* Pure Music Enjoyment: Ultra-high resolution and ultra-low distortion ensure every music detail is faithfully reproduced. With built-in high-power output, your HiFi headphones can fully unleash their potential—bringing you the pure beauty of music.
1.5-Inch LCD High-Definition Display
* Simple and intuitive: It clearly shows the current settings at a glance.
Top Panel Shortcut Keys and Large Control Knob
* Easily switch modes and adjust settings.
* Strong feedback buttons design
* Multi-function pressable knob
* Ergonomic slanted design
Full Aluminum Alloy Body with CNC Integrated Design
* Metallic texture, durable and sturdy, with enhanced electromagnetic interference (EMI) resistance
Triple Smart Protection for Uninterrupted Gaming and Entertainment
* Overheat, overload, and over-current protection circuits ensure stable and efficient operation of the K7, delivering an immersive high-fidelity audio experience.
Balanced Circuit Design with Ultra-Low Distortion of 0.0002%
* This design reduces noise and interference and includes gain control and headphone protection circuits to ensure clear and realistic audio output, optimizing the listening experience.
Multiple LDO Regulators to Ensure Clear Sound Quality
* Each stage is regulated by low-noise LDO voltage regulators, ensuring pure power output, enhancing audio performance, and providing strong power support.
Good Sound Quality, Visibly Proven
* Through strict parameter testing, the excellence of the sound quality is no longer abstract but a visible guarantee of quality.
Application Scenarios
* Desktop HiFi: Computer + K7 + HiFi Headphones
* Gaming & Movie Watching: Game console for PS5 + K7 + Gaming Headset/Active Speakers
Specifications:
4.4mm Balanced Headphone Output:
* Rated Power: Left + Right ≥ 2100mW + 2100mW (32Ω/THD+N <1%)
* Signal-to-Noise Ratio: 121dB
* Distortion (THD+N): 0.0002%
* Dynamic Range: 121dB
* Noise Floor: ≤6.5μV
* Frequency Response: 20Hz-20kHz (±0.2dB)
3.5mm Single-Ended Headphone Output:
* Rated Power: Left + Right ≥ 600mW + 600mW (32Ω/THD+N <1%)
* Signal-to-Noise Ratio: 122dB
* Distortion (THD+N): 0.0005%
* Dynamic Range: 121dB
* Noise Floor: ≤2.5μV
* Frequency Response: 20Hz-20kHz (±0.2dB)
RCA Line Output:
* Output Level: ≥2Vrms
* Signal-to-Noise Ratio: 121dB
* Distortion (THD+N): 0.0005%
* Dynamic Range: 121dB
* Noise Floor: ≤3μV
* Frequency Response: 20Hz-20kHz (±0.2dB)
Packing List:
* 1 × Fosi Audio K7
* 1 × USB A/C to USB-C Cable
* 1 × Bluetooth Antenna
* 1 × 12V Power Adapter
* 1 × Power Cable
* 1 × 1-to-2 Microphone/Audio Cable
* 1 × User Manual
Packaging Details:
* Weight: 1.3kg
