Headphones / Earphones
Headphone Amps
DAC built-in headphone amplifiers
Fosi Audio/K7 Silver Headphone Amplifier

Fosi Audio / K7 Silver Headphone Amplifier

The K7 is a versatile DAC/amp that delivers excellent performance across a wide range of scenarios, including music listening, gaming, and work.

【A Versatile DAC/Amp for Gaming and Music】
・Designed for both HiFi headphone enthusiasts and music lovers, the K7 serves as a powerful hub for building a desktop audio system. It delivers exceptional performance across a wide range of scenarios, including music listening, gaming, and professional work. In gaming, it excels at capturing subtle details—such as footsteps, rustling leaves, or gunfire—allowing you to quickly pinpoint the location of opponents. With its noise-canceling microphone support, it ensures clear voice communication during online multiplayer sessions. Offering high-precision decoding capabilities that surpass those of many standard gaming sound cards, the K7 provides an incredibly realistic and immersive experience.

【Audiophile-Grade Chipset】
・Equipped with an AK4493SEQ DAC, an XMOS XU208 USB processor, and a TPA6120 headphone amplifier, the K7 supports high-resolution decoding up to PCM 384kHz/32-bit and DSD256. With an output power of up to 2100mW, it can effortlessly drive even the most demanding headphones.

【Comprehensive Connectivity】
・The K7 features USB-C, coaxial, and optical inputs, along with Bluetooth (aptX HD/LL) and a 3.5mm microphone input. It is compatible with a wide range of devices—including the PS5, PS5 Pro, Nintendo Switch, PC, and Mac—making it highly versatile for gaming, music, and remote work. Output options include 4.4mm balanced, 3.5mm single-ended, and RCA, allowing for easy connection to headphones, powered speakers, or external amplifiers.

【User-Centric Design】
・Compact yet highly functional, the K7 features two large control knobs, five shortcut buttons, and an angled chassis designed for ergonomic comfort. A high-resolution display provides real-time status updates, making operation both simple and intuitive. [Durable All-Metal Construction]
・Crafted from robust aluminum alloy, the K7 features a sturdy, wear-resistant chassis with a smooth metallic finish and enhanced electromagnetic interference (EMI) shielding.

■ Inputs: Bluetooth, COAX, OPT, USB
■ Outputs: 3.5mm single-ended / 4.4mm balanced headphone outputs, RCA
■ Signal-to-Noise Ratio (SNR): ≥121dB
■ THD+N: ≤0.0002%
■ Noise Floor: ≤6.5μV
■ Input Voltage: DC 12V
■ Included Accessories
・K7 unit
・USB-A/C to USB-C cable
・Bluetooth antenna
・12V power adapter
・Y-splitter for microphone/audio
・User manual