Quad-DAC desktop streamer, DAC, and preamp

The Gustard X30 is a flagship DAC and network streamer built for uncompromising sound quality and modern flexibility. Featuring four ES9039S Pro DAC chips, a discrete Class‑A analog stage, FPGA-based control, and an integrated preamp with relay R2R volume, it delivers precise, natural, and spacious audio. With Roon, AirPlay, UPnP, and Spotify streaming over Ethernet, plus fixed balanced and single‑ended outputs, the X30 serves as a refined centerpiece for high-end digital and analog systems alike.

Quad ES9039S Pro DAC Chips

Each stereo channel is driven by two ES9039S Pro chips with independent power and grounding, maintaining strict channel separation. This reduces interference and enriches spatial imaging, delivering nuanced stereo definition.

Analog Low‑Pass Filter in Discrete Class A

The X30’s analog low-pass filter uses discrete Class‑A circuitry tailored to ES9039S Pro’s behavior. Every component operates at its optimal point for fidelity, crafting a detailed yet natural tonal response.

FPGA-driven Streamer with Preamp Relay

A programmable FPGA controller manages clocking, PLL shaping, DEP op filtering, and i2s/PCM/DSD decoding. It also enables relay-based R2R volume control within the analog domain—controled via remote—with no signal degradation whether used with an amp or active speakers.

K2 OCXO Clock & External Sync via BNC.

The X30 integrates a K2 oven-controlled crystal oscillator (OCXO) for stable timing and allows a 10 MHz external clock input via BNC (square/sine wave, 0.2–3.3 V). 

Network Streamer with Broad Format Support

Built-in Gigabit Ethernet enables streaming protocols including Roon, AirPlay, UPnP, NAA, and Spotify, with web-based config and online firmware updates.

Fixed-Level Balanced & Single‑Ended Outputs

The X30 provides fixed-level outputs: RCA (2.5 Vrms, 100 Ω) and XLR (5.1 Vrms, 100 Ω), ideal for downstream preamps or direct amplifier connection.

Product Highlights

• Four ES9039S Pro DAC chips in fully balanced design

• Discrete Class‑A analog low-pass filter

• FPGA-based streamer with relay R2R analog volume

• K2 OCXO clock with 10 MHz BNC sync input

• Ethernet-supported protocols: Roon, AirPlay, UPnP, NAA, Spotify

• Fixed RCA (2.5 Vrms) and XLR (5.1 Vrms) outputs, both 100 Ω

• Brushed aluminum chassis—silver or black finish

• Dimensions: 430 × 300 × 80 mm (footprint); package weight ~10 kg

• Power: AC115/230 V, 30 W consumption

Specs

• Digital Inputs: LAN (100/1000 Mbps), 10 MHz BNC for external clock

• Analog Outputs: FIXED RCA (2.5 Vrms, 100 Ω); XLR (5.1 Vrms, 100 Ω)

• Signal Performance:

  • Frequency response 20 Hz–20 kHz ±0.2 dB;

  • DNR: 130 dB

  • SNR: 129 dB

  • Crosstalk –139 dB @ 10 kHz

  • THD+N ≤ 0.0001% @ 1 kHz

  • IMD ≈ 0.001%

• Dimensions: 430 mm × 300 mm × 80 mm (height incl. feet 92 mm)

• Power: AC115/230 V 50/60 Hz; < 30 W power consumption

• Weight: Packaged: 10 kg

What’s Included

• Gustard X30 main unit

• Remote control

• Power cable

Featured reviews

"It's the quintessential DAC to beat." -SoundNews