GUSTARD DAC-X20 Pro X20 Pro Dual ES9028PRO XMOS DSD DOP 384K DAC Decoder

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Price: $859.00
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1. Doul ESS Technology Sabre Reference 32bit ES9028PRO DAC chip,R and L sound Chanel one on each side。
SNR up to 129db, distortion rate -120db
2.Automatic adaptation master clock technology and Asynchronous master clock technology。
Two clock mode can be freely selected.
3. XMOS 32bit USB receiver chip which is best performance asynchronous USB audio solution. 
4.CPLD programmable logic device. Soft control.
5. Three files gain, volume can be adjusted. Attenuation adjustable from 0 to -99DB.
6. TFT LCD screen, adjustable contrast.
7. Power supply with two 50W O-type transformers, Digital and Analog independent power supply, and use Discrete Components regulation Voltage stabilization.
8. Full balance Discrete components Analog Line. Balance / RCA output simultaneously.
9. Digital Input: balanced Spdif AES/EBU port, RCA, Toslink Optical input and USB,(Key switch)
10. Both 110/120v and 220/240v version supported.
11.Power Supply: AC 230V 50 / 60Hz (AC 115V 50 / 60Hz),Power Consumption: <50W
12.Dimensions (excluding protruding part): W 380MM * H 65MM * D 260MM
Package Size:L 470MM*W 360*H 175MM
13.• Extensive digital filtering
DSD: 47K / 50K / 60K / 70K;

DAC Specification:
ESS Technology ESS ES9028PRO Sabre Reference 32-bit DAC 8 mono to 2 stereo configuration,4 D/A converters per channel
Digital Input:
PCM:16-24bit /44.1、48、88.2、96、176.4、192 kHz
PCM:16-24bit /44.1、48、88.2、96、176.4、192 kHz
PCM:16-24bit /44.1、48、88.2、96、176.4、192 kHz
PCM:16-32bit /44.1、48、88.2、96、176.4、192、352.8、384kHz
DSD Native:DSD64、DSD128、DSD256、DSD512
USB: 16-32bit / 44.1、48、88.2、96、176.4、192、352.8、384 kHz

Analog Output:    
RCA Output :3.0 Vrms @0dBFS
XLR Output :6.0 Vrms @0dBFS 
Frequency  :20-20K Hz +/-0.15dB

USB 2.0 interface can replay 1BIT/2.8224MHz or asynchronous sampling rate 5.6448MHz DSD Digital Signals.
This is supported DSD64/DSD128/DSD256.
Coaxial / Optic / AES / EBU support DOP64, can connect Digital Music Player playback SACD MUSIC

2*ES9028PRO, L and R channel are use one, sound stable, rich in detail, dynamic flexible, each other don't interfere.

Automatic adaptation master clock technology and Asynchronous master clock technology

Two clock mode can be freely selected.

CPLD Digital Integer technology;

Independent analog PCB, digital and analog separate design;

Analog LPF circuit using Fully discrete circuit  Class-A line.
Fully discrete circuit  Class-A work flexibility. It is free to adjust the parameters of each level.
Technical experience and long debugging process, to achieve the best working condition.

Two 50W O-type transformers. The best choice for high-end equipment.
Coupled better and more efficient. A more stable job, to bring you more beautiful sound.

ACCUSILICON femtosecond crystal;

XOMS U8 USB Professional SOUND CARD:
XMOS USB using the latest and highest-level U8 (8 core) USB AUDIO scheme,
PCM highest support 32Bit 384K,
DSD Support DSD64 (2.8224MHz), DSD128 (5.6448MHz),DSD256, with leading system compatibility:
Compatible includes 32/64-bit Microsoft Windows XP, WindowsVista, Windows7, Windows8, Windows 8.1, Windows 10 and other mainstream Windows systems, supports Apple MacOS systems, Linux kernel support system, and is compatible with partial support OTG function of iOS, Android smart devices .
Multi-level regulator + multi-stage filter power scheme;

Shipping Fees

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If a customer would like the order reshipped, they’ll be charged a reshipment fee. Customers may also be subject to a restocking fee of up to 20 percent of the product cost.

Which Couriers To Use?

Given the amount of shipping partners we work with and the vast coverage area we serve, there are likely regions with much longer transit times than others. If you have any feedback, suggestions, or problems with the courier of your shipment, please feel free to submit a support ticket via the "Contact Us" button below.

Our goal is to provide our customers with the best shipping experience possible at a reasonable cost. This is why we constantly negotiate with existing shipping partners for lower rates and actively test new couriers for potential opportunities.

PO boxes or APO/FPO

The ability to ship to PO boxes or an APO/FPO address depends on the item's weight. If an item weighs more than 9 pounds, we won’t be able to ship to these addresses because of our current courier agreements.

To determine if your order is eligible for shipment to PO boxes or an APO/FPO address, please contact SHENZHENAUDIO Support.

Estimated Delivery Time

For customers in the continental United States:
5 to 14 business days from the date of shipping

For customers in Hawaii and Puerto Rico:
2 to 4 weeks from the date of shipping
International customers can expect longer shipping times, depending on the country in which they live:

Canada: 1 to 3 weeks from the date of shipping
Australia, New Zealand, Germany, France, and the UK: 2 to 4 weeks from the date of shipping
Other countries not listed above: 3 to 6 weeks from the date of shipping

Please keep in mind that these are rough estimates and shipments can be delayed due to unforeseen circumstances, like postal strikes or severe weather.

If, for some reason, you don’t receive your order within the estimated time frame provided above and suspect that it might be lost in transit, please submit a support ticket from your transactions page and we can look into the order with the courier. Lost-in-transit requests must be submitted to SHENZHENAUDIO Support within 4 months of the date of shipping or before the courier archives the tracking information.

Easy 30-Day Return Policy

If you are dissatisfied with your purchase for any reason, you may return it to SHENZHENAUDIO within 30 days of the received date, subject to the conditions and exclusions below.

Eligibility Conditions

Please read conditions below. If all conditions are not met, SHENZHENAUDIO reserves the right to refuse the return. All returned items must be in new condition, in their original unaltered box (including an intact UPC code) and must include all packing material, blank warranty cards, manuals and accessories. SHENZHENAUDIO can only refund the original purchase price. Shipping and handling fees are nonrefundable.

Defective or Damaged Items

Defective items may be repaired, exchanged or refunded at our discretion for the same model or manufacturer's equivalent model.


Depending on where you live, the time it may take for your exchanged product to reach you, may vary. Please allow 3-5 business days for mail-in exchanges to be processed.

Refunds & Credits

Once we receive and inspect your item(s), we will credit your account. Please allow 5-7 days for a credit to appear on your account. In most cases, we will issue your refund in the same way you made the original purchase. Please note: we can only refund the original purchase price. Shipping and handling fees are nonrefundable.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.


To return your product, you should mail your product to: 4F 405, Building F, No.2 Shangxue Science and Technology North, Bantian Street, Longgang Dist, ShenZhen, 518129 Guangdong, China

If you’ve done all of this and you still have not received your refund yet, please contact us at