Fosi Audio K7 DAC Headphone Amp Desktop USB C Digital to Analog (Refurbished)

About this item

Store Categories Store Categories BLUETOOTH AMPLIFIER HEADPHONE AMPLIFIER PREAMP DAC 2 CHANNEL AMPLIFIER 2.1 CHANNEL AMPLIFIER MONO AMPLIFIER SUBWOOFER AMPLIFIER Hot sale Headphones Auto amp Turntable Other Fosi Audio K7 DAC Headphone Amp, Desktop USB C Digital to Analog Audio Converter for Workspace and Gaming PC PS5, Optical/Coaxial/Bluetooth aptX HD LL/Microphone Input, 3.5mm/4.4mm Balanced/RCA Output Product Description Feature: Versatile DAC Amp: T he K7 is d e signed 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 Specification： Chipset：XMOS XU208+AKM4493SEQ+QCC 3031+ TPA6120 Maximum Sampling Rate：USB：PCM 384kHz-32bit; DSD256；Optical：PCM 24bit/192kHz；Coaxial：PCM 24bit/192kHz；Bluetooth：PCM 24bit/48kHz Output Level：RCA: ≥2Vrms Input：Coaxial, Optical, USB-C, 3.5mm Microphone Output：RCA, 3.5mm Single-Ended, 4.4mm Blanced SNR：3.5mm: 122dB；4.4mm: 121dB；RCA:121dB THD+N：<0.0003% Dynamic Range：121dB Output Power：3.5mm: 1000mW(32Ω)；4.4mm: 2300mW(32Ω) Noise Floor：3.5mm: ≤4.5μV；4.4mm: ≤7.5μV；RCA: ≤4.5μV Frequency Response：20Hz-20kHz(±0.1dB) Bluetooth Version：5.0 Bluetooth Connection Distance：≥13m Bluetooth Codecs：SBC, AAC, aptX, aptX HD, aptX LL Firmware Upgrade：XMOS firmware can be updated via the Type-C interface. USB Compatible Devices：Windows 7, 8, 8.1, 10, 11 (Driver required)；Mac OS X, Linux (No driver required)   Package Include:     *1x Fosi Audio DAC-K7     *1x 2-in-1 USB Type-A/C to Type-C Cable     *1x Bluetooth Antenna     *1x Y-Splitter Cable     *1x DC12VPowerSupply     *1x User’s Manual About "Used": 🔥 Like New & Fully Certified! Premium Refurbished Fosi Audio K7- Backed by eBay’s 1-Year Warranty  🔥You’ve found a top-tier refurbished gem! This K7 isn’t just "Used" — it’s been professionally inspected, repaired, and tested to meet strict performance standards under eBay’s Certified Refurbished Program. Rest easy knowing it looks and works like new! ✅ Why Choose This Refurbished Deal?     ✔️ Rigorously Renewed: Factory defects fixed; scratches, dents, or flaws professionally addressed.     ✔️ Deep-Tested & Sanitized: Every function verified (battery, ports, sensors, etc.) + hygienic cleaning.     ✔️ Warranty Backed: Includes eBay’s 1-Year Warranty — your guarantee against defects.     ✔️ Ready to Wow: Ships in eco-friendly packaging with all essential accessories (charger, manual, etc.). 🛡️ Shop Confidently Under eBay’s Refurbished Promise:     30-day money-back guarantee — no questions asked.     Free return shipping if item doesn’t match descriptio

• Color: Black
• SINAD: 113db
• Year Manufactured: 2025
• Audio Outputs: Headphone Jack, RCA
• Number of Outputs: 2
• Brand: Fosi Audio
• THD: 0.0002%
• Recommended headphone impedance: 16-300Ω
• Type: DAC Headphone Amp
• Audio Inputs: Coaxial Digital, USB, Optical, Bluetooth, 3.5mm Microphone

Specifications

THD

0.0002%

UPC

761736133713

Type

DAC Headphone Amp

Brand

Fosi Audio

Color

Black

Model

K7

Power

3.5mm:600mw*2(32Ω);4.4mm:2.3W*2(32Ω)

SINAD

113db

Audio Inputs

Coaxial Digital, USB, Optical, Bluetooth, 3.5mm Microphone

Audio Outputs

Headphone Jack, RCA

Number of Inputs

4

Number of Outputs

2

Year Manufactured

2025

Manufacturer Warranty

1 Year

Recommended headphone impedance

16-300Ω