A reference-grade desktop DAC, headphone amplifier and preamplifier featuring fully balanced architecture, AKM AK4499EX DAC, Dynamic Negative Feedback technology, HP-EQ with 2,500+ headphone profiles, and support for DSD512 / PCM 768kHz 32-bit.

A New Benchmark in Desktop Audio

The Luxsin X9 sets a new standard for what a desktop audio hub can be. Conceived for audiophiles and high-fidelity enthusiasts who refuse to compromise, it unifies a reference-grade DAC, a high-power headphone amplifier and a fully featured preamplifier into a single, elegantly engineered chassis. Powerful proprietary technologies sit beneath a 4" fully laminated touchscreen interface, delivering a listening experience that is as effortless to operate as it is extraordinary to hear.

True Flagship Engineering

The X9's motherboard features an ultra-low ripple of just 40nV, achieved through a star-shaped voltage distribution circuit that cleanly separates digital and analogue power paths — eliminating the cross-contamination that degrades lesser designs. The flagship AKM AK4499EX DAC is stabilised by a TI BB OPA1612 op-amp, providing an ultra-stable reference voltage for signal processing of exceptional accuracy. A THD+N of -120dB speaks for itself: this is a device built without compromise.

True Full Balance — From Input to Output

The X9's fully balanced, fully differential architecture runs from end to end. Signal input decoding, the AK4499EX DAC, OPA1612 IV conversion, low-pass filtering, R2R volume control, dynamic feedback and the TPA6120A2 headphone amplifier stage — every step of the signal chain operates in full balance. The result is uncompromising audio performance: unparalleled clarity, precision and depth, with all the benefits of balanced design preserved throughout.

Dynamic Negative Feedback (DNF)

Luxsin's proprietary Dynamic Negative Feedback technology, implemented via the OPA1612 and TPA6120A2 combination, actively and continuously reduces harmonic and intermodulation distortion. The result is a cleaner, more transparent sound with minimal coloration — enhancing tonal purity and dynamic expression while accurately reproducing every sonic detail for a refined and immersive listening experience.

Precision Volume Control

An R2R volume control circuit, constructed from high-precision components in a fully balanced configuration, enables left/right channel balance adjustment to an accuracy of 0.1dB. This level of precision ensures distortion-free attenuation and absolute channel consistency — the kind of control that matters when you are listening critically.

Dynamic Negative Feedback (DNF)

Luxsin's proprietary Dynamic Negative Feedback technology, implemented via the OPA1612 and TPA6120A2 combination, actively and continuously reduces harmonic and intermodulation distortion. The result is a cleaner, more transparent sound with minimal coloration — every sonic detail reproduced with accuracy and tonal integrity.

HP-EQ — Headphone Optimisation at the Hardware Level

The X9's HP-EQ system applies real-time, hardware-level equalisation based on the measured frequency response of your specific headphones, targeting a sound signature closely aligned with the Harman curve. With a database of over 2,500 headphone models and support for custom EQ profiles with one-click switching, achieving optimised, fatigue-free listening has never been more accessible — or more precise.

Headphone Impedance Self-Check

A self-developed impedance detection system automatically measures the impedance of connected headphones via the 6.35mm or 4.4mm ports, then intelligently recommends the optimal output gain setting. Luxsin's advanced bypass detection technology ensures this measurement is performed with zero impact on sound quality.

4" 1080P Full-Colour Touchscreen

The X9's 4.0-inch 1080P full-colour touchscreen delivers a vibrant, high-definition interface that makes navigating every feature intuitive and visually engaging. When you want nothing between you and the music, the display can be switched off entirely for a blackout listening experience. The device also enters standby automatically when no signal is detected, ensuring efficient, unattended operation.

Visible Rhythm — Dynamic VU Meters

A dynamic VU meter captures every subtle fluctuation in the audio in real time, giving the X9 a visual pulse to match its sonic performance. Multiple VU meter styles are available, allowing you to personalise the display to suit your mood and setup.

Diamond-Cut Design

The front panel features a diamond-cut bevel set at a 15° incline — a detail that is as functional as it is beautiful. The angled face improves ergonomic touch control from a seated listening position, while the full CNC-machined aluminium chassis ensures excellent heat dissipation, structural rigidity and a refined, premium appearance that stands apart from the competition.

Smart Control & OTA Updates

The X9 runs on an advanced automotive-grade RTOS (Real-Time Operating System), ensuring stable and responsive control of all inputs and outputs. It supports infrared remote control as well as wireless control via smartphone or computer. Over-the-air (OTA) firmware updates mean the X9 can receive performance improvements and new features without any physical intervention — a device that gets better over time.

Crossfeed & Adjustable Soundstage

Digital crossfeed delivers a natural, speaker-like sound presentation that reduces listening fatigue during extended sessions. Users can also adjust soundstage depth and width independently — both implemented digitally to ensure precision without the distortion or tonal coloration that analogue processing introduces.

Audiophile-Grade Components Throughout

No component in the X9 was chosen by accident. The internal bill of materials reads like a wish list for a high-end bespoke build:

• AKM AK4191EQ + AK4499EX — flagship DAC chipset
• AKM AK7739 DSP audio processor
• XMOS XU316 USB interface
• TI BB OPA1612 op-amps
• Femtosecond clock for ultra-low jitter
• Premium red WIMA capacitors
• Gold-plated aluminium electrolytic capacitors
• High-grade green non-polarised capacitors
• 0.1% high-precision, low-temperature-drift resistors
• Gold-plated connectors
• OCC silver-plated internal cabling

Connectivity — Built for Any Setup

The X9 is engineered to integrate seamlessly into any audio environment, from a dedicated headphone listening station to a full home theatre or professional desktop setup:

Inputs: HDMI ARC, XLR balanced, RCA coaxial, optical (TOSLINK), USB-B, USB-C

Outputs: 4.4mm balanced, XLR4 balanced, 6.35mm unbalanced, dual subwoofer outputs, 12V trigger

Display: 4" fully laminated touchscreen with multiple VU meter style options

Digital formats supported: DSD512, PCM 768kHz / 32-bit

Specifications