Apogee Groove - USB Interface

100-level Smooth DAC Volume Control Almost lossless 100-level volume control, which separates the device volume control from smartphone, not only presents better performance but also brings a smooth control experience.

1. Apple MFi Certified Guaranteed performance and compatibility for Apple devices.

Quad sum DAC, 4 DACs per channel for highest dynamic range and lowest distortion

Silver-plated copper conductors are twisted together for superior signal purity, while the gold-plated USB-C connector and headphone sockets help ensure a stable, low-loss connection for uninterrupted audio.

Latest XMOS XU316 USB Processor

The upgraded version of Fosi Audio Q4 adds microphone function, K5 Pro headphone DAC amp combo, next-generation audio converter with unrivaled internals, more outstanding performance, and richer audio details. Born for Gaming. K5 Pro stereo DAC headphone amplifier is perfect for your home gaming system, equivalent to an external sound card, suitable for PS5 Computers PC MAC active speakers, etc.

Outstanding performance - Handling USB duties in the KA17 is the 16-core XMOS XU316, rarely found in audio dongles. This chip features lower latency, more stable signal transmission, and better compatibility than typically used USB control chip. And when paired with dual crystal oscillators, the KA17 is more than capable of handling various digital audio sources with various sampling rates.

From the portable desktop-level unit M17, the portable desktop-grade DAC and amp Q7, to the more portable yet desktop-capable M15S, audiophiles warm reactions to these models prove many love desktop-level audio gear. After being successfully applied to the three high-end models, the desktop mode will now evolve and be applied to audio dongles. The FiiO KA13 mini desktop amp features a desktop mode to fully unleash its performance.

OUTPUTS - Balanced 4.4mm & S-Balanced 3.5mm

PORTABLE DESIGN - Your music will never stop with 6-8 hrs of battery life (depending on use) and a slim, lightweight design perfect for carrying in your pocket wherever life takes you.

Best in Quality

General Disclaimer The image colour may differ from the actual product due to lighting. Please refer to the product for accuracy.

Long battery life Dual power supply design and 1800mAh battery, quickly switch between how the Q3(MQA) portable DAC is being supplied power using the Charge switch on the bottom. Using AUX In, the battery life is up to over 23 hours, and when using USB In the battery life is up to over 12 hours.

High-performance DAC&USB decoding chip The K5Pro ESS headphone amps achieves new heights in sound quality and comes with a high level of resolution sound. ES9038PRO with 32-bit processing, along with the XUF208 USB decoding chip with 768kHz and DSD256 inputs, and it also upportes mobile phone connectivity.

Upgraded Version A new generation USB-C portable headphone DAC and amplifier, supporting up to DSD256 and PCM 32bit 384kHz decoding for a high-resolution sound reproduction. It delivers a powerful drive of up to 170mW@32 each channel, effortlessly powering high or low-impedance headphones with 3.5mm single-ended or 4.4mm balanced connections, immersing you in the exquisite world of music.

Premium quality - Mineral-filled polymer shell with aluminium front plate.

What You Get Q4 USB DAC x1, USB charging cable x1, optical cable x1, PC-USB to type B cable, User Manual x1, our worry-free 24-month warranty, as well as friendly customer service. Please note that there is no remote control included in the package.

Two modes for your choice Sometimes, you may not have access to a device that can connect to the new K3 via USB Audio Class 2, you can go to USB Audio Class 1 mode with just the flick of a switch. In high-performance applications, you can use the 2.0 mode to enjoy up to 384kHz DSD 256 decoding. For certain situations, you can use the 1.0 mode to enjoy up to 96kHz 24-bit PCM audio without needing any drivers. *Using the 2.0 mode requires downloading and installing the FiiO USB driver.

Supports Dolby and DTS The audio amp pc headphones device features an integrated de-pop function, suppressing any pop noise during PC power-up and shutdown for smooth and stable operation. With a mini USB interface that is compatible with USB 1.1 2.0, the USB Audio DAC can be easily used with your devices.

POWERFUL AMPLIFIER- Experience the full dynamic range of high impedance headphones with an impressive dual mono headphone amp utilizing Direct Drive circuitry to deliver up to 4,000mW of power per channel, driving headphones from 16 to 600 ohms, plus three power output modes (Eco, Normal and Headamp Turbo) so power and gain can be dialed in to suit ALL headphones even making IEMs super quiet with our built-in iEMatch for sensitive in-ear monitors, or use as a preamp with your existing amplifier