TOPPING DX1 II ES9039Q2M Desktop DAC & Headphone Amplifier

TOPPING DX1 II Desktop DAC & Headphone Amplifier

The TOPPING DX1 II is a compact desktop DAC and headphone amplifier built for gaming, music, and everyday desktop use. A single USB-C cable carries both power and audio, while the ESS ES9039Q2M DAC, four-channel fully-balanced amplifier, and up to 1000mW x 2 output power drive everything from sensitive gaming IEMs to demanding over-ear headphones. Ultra-low noise, -140dB channel crosstalk, and a built-in display make the DX1 II a complete high-performance audio hub for your desktop.

ESS ES9039Q2M DAC – Flagship-Grade Conversion

The DX1 II upgrades the original with ESS’s ES9039Q2M DAC chip, delivering a dynamic range up to 128.8dB and THD+N as low as 0.000056%. Measurements show SINAD around 125dB and a noise floor near -160dB, so every detail – from faint reverb to explosive game effects – is reproduced with clarity and precision.

Four-Channel Fully-Balanced Signal Path

The fully-balanced amplifier design uses four independent channels with separate left/right architecture from DAC stage through output stage. Channel crosstalk reaches -140dB at 1kHz through the balanced output, preserving directional cues, imaging accuracy, and positional detail for competitive play.

Up to 1000mW x 2 Output Power

Powered solely through USB-C, the 4.4mm balanced output delivers up to 1000mW x 2 at 32Ω and 64Ω, with 230mW x 2 available at 300Ω – enough headroom for high-impedance headphones and planars. The 3.5mm single-ended output covers everyday earphones with ease.

XMOS XU-316 Platform with High-Resolution Support

The 16-core XMOS XU-316 USB stage supports PCM playback up to 384kHz and DSD256 decoding. Windows compatibility is handled through a custom Thesycon USB driver, while macOS works driver-free. Selectable UAC1.0 and UAC2.0 modes expand compatibility with gaming consoles and broader USB sources.

Ten-Band PEQ with TOPPING Tune Software

A powerful DSP engine supports up to 10 fully customizable bands of parametric EQ with independent left/right control. Use the TOPPING Tune software to adjust frequency, gain, and Q factor, import target curves, and save up to 3 profiles for instant recall – tune footsteps for FPS games or smooth room modes for speakers.

Crystal-Clear Communication with Microphone Support

The 3.5mm TRRS jack supports standard headphones and gaming headsets with an inline microphone. Make voice calls, chat in games, or record audio while enjoying high-fidelity playback – the mic input supports up to 192kHz/24-bit for clear voice transmission.

Versatile Connectivity – Optical I/O, RCA & 4.4mm Line Out

Beyond USB input, the DX1 II offers independent optical input and output (PCM up to 24-bit/192kHz and DSD64 via DoP), plus RCA single-ended and 4.4mm balanced line outputs that let it double as a preamp. Connect your CD player, TV, or game console and route processed audio to speakers or a traditional DAC.

Seamless Compatibility with Switch, PS5 and More

Switch to UAC 1.0 mode for plug-and-play compatibility with Nintendo Switch and PlayStation consoles. The included infrared remote provides effortless control over gain, EQ presets, filters, output modes, and custom preset recall – no pairing delays.

Compact All-in-One Design with Real-Time Display

A built-in display shows volume, input, gain, and PEQ profile status at a glance. The CNC-machined aluminum chassis houses a patented discrete low-noise reference power supply, providing clean, independent power to the DAC and analog stages – all in a desktop-friendly footprint powered by a single USB-C cable.

Specifications

• DAC Chip: ESS ES9039Q2M
• USB Processor: XMOS XU-316 (16-core)
• USB Audio Mode: UAC1.0 / UAC2.0 selectable
• PCM Support: Up to 384kHz
• DSD Support: DSD256
• Balanced Output Power: 1000mW x 2 @32Ω / 1000mW x 2 @64Ω / 230mW x 2 @300Ω
• THD+N: 0.000056% minimum measured
• SINAD: Up to 125dB
• Signal-to-Noise Ratio: Up to 128.8dB
• Dynamic Range: Up to 128.8dB
• Balanced Output Level: 5.1Vrms @0dBFS
• Balanced Headphone Output Level: 8.3Vrms measured
• Channel Crosstalk: -140dB @1kHz
• Noise Floor: Below 0.9µVrms
• Frequency Response: 20Hz-20kHz (±0.1dB) / 20Hz-40kHz (±0.3dB)
• Microphone Input: Up to 192kHz/24-bit via 3.5mm TRRS
• Optical I/O: PCM up to 24-bit/192kHz, DSD64 (DoP)
• Digital Filters: 7 selectable filter modes
• Outputs: 3.5mm single-ended headphone + 4.4mm balanced headphone; RCA + 4.4mm line out
• Dimensions: 3.9 x 3.9 x 1.3 in (10 x 10 x 3.2 cm)
• Chassis: CNC-machined aluminum (Black / Silver / White)

What's Included

• TOPPING DX1 II
• Infrared remote control
• USB-A to USB-C cable
• USB-C to USB-C cable
• Product information card