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GUSTARD U16 ES8620 Support PCM32bit/768K DSD512 DOP And Native DSD Digital Interface

 

Rigorous design, reasonable layout, neat workmanship, solid materials.

U16-1

Based on the latest USB audio interface solution ES8620 from ESS,

Supports up to PCM 32bit/768KHz and DSD512, and supports both DoP and Native DSD.

ESS's USB audio interface chip design is a completely optimized architecture for high-quality digital audio signal processing. It is not a general-purpose chip with USB digital audio interface code, so it is immediate in terms of sound quality improvement;

 

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A 128MB SDRAM is used as the system buffer and digital audio processing FIFO.

Most of the space is used for internal scheduling of the USB audio interface IC, and the redundant space is reserved as much as possible to ensure that other business logic operations other than the USB audio interface function in the main IC do not interfere with the digital audio processing flow.

In order to achieve optimal digital audio performance, the actual digital audio processing FIFO capacity is reduced to a minimum to ensure the lowest digital domain delay and digital output jitter performance;

 

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To ensure the highest quality digital audio signals and the best clock jitter performance, the U16 uses up to three FPGAs to implement USB audio interface clock management and the audio clock frequency synthesizers in the external 10M clock circuit.

This part of the circuit is powered independently, to avoid mutual interference of the internal wiring of the FPGA;

 

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In the core circuit of the USB audio interface, an FPGA is used to implement the USB audio interface IC running in the Slave mode.That is, the USB audio interface IC receives the audio clock signal generated by the clock management FPGA and outputs only the digital audio data signal, thereby minimizing the digital signal interference introduced during the USB transmission process;

 

 

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The U16 has an external 10M clock input*, and the user can choose to access an external high-quality 10M clock reference source to further improve the sound quality.

* For security reasons, U16 does not automatically switch the clock source after accessing the external 10M clock. You must manually select the internal and external clock sources.

The audio clock synthesis circuit in the external 10M clock circuit uses two FPGAs corresponding to the audio main clock frequency synthesizer of the 44.1KHz and 48KHz base frequencies.

This design, on the one hand, avoids the crosstalk of the internal wiring of the FPGA; on the other hand, it also uses the relevant resources in the FPGA chip as efficiently as possible.

The frequency accuracy and jitter performance of the final synthesized audio main clock signal of this circuit have reached the limit performance level of the Current design;

 

 

 

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The local audio clock source uses a pair of femtosecond clocks. This unit uses two ACCUSILICON AS318-B ultra low phase noise crystals as the local audio clock source, and the RMS jitter is as low as 88 femtoseconds (10Hz-1MHz).

In addition to the standard digital audio outputs, the U16 also has a flexible BNC output whose output signal can be freely selected between Word Clock or S/PDIF.

 

 

 

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The U16's built-in linear regulated power supply uses an audio-specific toroidal transformer.

 

 

 

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Product specifications

 

Digital input:

USB port: USB Type-B female port, support USB2.0

10M BNC input: input impedance 50 Ohm, 0dBm-16dBm

 

Digital output:

RCA coaxial S/PDIF port: output impedance 75 Ohm, output level 500mVpp @75 Ohm load

24bit 44.1k-384k/DOP64-128

XLR AES3 port: output impedance 110 Ohm, output level 2.1Vpp @110 Ohm load

24bit 44.1k-384k/DOP64-128

OPTICAL TOSLINK port: 24bit 44.1k-192k /DOP64

Multi-function BNC port:

output impedance 75 Ohm, S/PDIF output level:750mVpp @75 Ohm load

S/PDIF support specification (when S/P OUT is selected): 24bit 44.1k-384k/DOP64-128

Word Clock output level:3.3Vpp MAX @ noload

Word Clock output frequency (when WCK OUT is selected): PCM: 44.1k-768k.

DSD: 2.82M-22.57M

IIS over HDMI interface (non-standard HDMI interface):

differential I2S signal with LVDS output level,

PCM: 32bit 44.1k-768k, DSD: 2.82M-22.57M (DSD64-DSD512)

 

Other specifications:

Windows driver supports Windows 7 (SP1 and newer); Windows 8; Windows 10

No additional drivers required for Mac OS and Linux

All-aluminum chassis with sandblasted surface, available in silver (white) and black.

AC power supply: AC 115V/230V 50/60Hz

Power consumption: <15W

Dimensions: width 220mm * height 50mm * depth 170mm (without protruding parts)

Packed size: length 185mm * width 170mm * height 85mm

Packed weight: 2.5KG

 

No additional drivers required for Mac OS and Linux

 

QUESTIONS & ANSWERS

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 Shipping Policy

  1. All items will be shipped out from China within 1~ 3 days after payment except prominent note on the page. If we cannot, we will let you know new shipping date at once after the payment and cancellation is available if you cannot accept that. 
  2. We ship all items at free charges through Registered Air Mail with a tracking number except you choose others. 
  3. DHL/UPS/EMS  as a faster shipment option with additional charge is available. 
  4. Taxes may apply by some country law. Hifigo will be not responsible for the import tax. But we could declare item at a lower cost usually, leave us a message with value if you want. If the declared value isn't accepted by your Custom finally, you have to pay the extra tax. 

Delivery Lead-Time for Express Service

If you chose Express service with extra charges which is US$20-25 usually, it will be shipped out by DHL or EMS. Total shipping lead time from our warehouse to you as follows: 

America/Mexico/Canada or Europe : 4 - 6  days by DHL

Japan/ : 3 - 5 days by DHL/Direct Sagawa

Tailand/Singapore: 3 - 5 days

Korea: Special line 2 - 4 days 

Russia: 7 - 15  days by EMS  ( no battery ones, products with battery cannot shipped through EMS) 

South Africa :  4 - 6  days by DHL 

Pls note: 

  1. When your package ships via Express(DHL usually), we will send DHL agency tracking number first ( Yanwen usually) for the courier that delivers the package to DHL etc. Then, the DHL number will show on the same tracking website in 1-2 days, usually your package will be scheduled on flight to your country the same day after DHL number shown. 
  2. There will be additional charges around US$ 35 for remote area. If you are not sure about whether your area is remote, write us for promopt reply.   

Delivery Lead-Time of Free shipping by Registered Air Mail

North America

United States/ Mexico/ Canada: 8 - 15 days ( Dispatch by USPS, Bluetooth earphones approx. 20days ) 
Elsewhere of North America: 10 - 20 days 

Asia

Tailand:5 - 8 days
Japan:6 - 8 days ( Dispatch by Sagawa , usually you will get it in 2days after you could track it) 
Malaysia:5 - 8 days 
Korea: 8 - 12 days
Elsewhere of Asia: 10- 20 days 

Europe

Germany: 8 - 12 days
UK:8 - 12 days 
France:8 - 12 days 
Ukraine:8 - 12 days 
Italy main cities : 10 -14 days 
Elsewhere of European countries: 10 - 20 days 
Russia major cities: 15 - 25 days ( under US$300 order by post )
                                      10-15days ( above US$300 order by special railway Express line) 
Elsewhere of Russia: 20 - 30 days

Oceania

Australia:5 - 9 days
Elsewhere of Oceania: 10 - 20 days

Africa

14-35 days  

South America

Peru major cities:14-16 days 
Elsewhere of South America 15-25 days

Note: There may be exceptions to the delivery times presented here, depending on your location. Sometimes it delays due to the customs check or festival. 

Tracking FAQ

Q: When will you ship out the cargoes after payment? 

A: Within 1 - 3 days except prominent note on the page for pre-sale items. If we cannot ship out in 1~ 3 days, we will let you know new shipping date at once and cancellation is available if you cannot accept that. 

Q: I got a shipping confirmation and tracking number. Why don’t I have tracking information listed immediately?

A: Since shipping process involves multiple steps of coordination between internal and external parties, it doesn’t happen instantly. Usually tracking information will be listed on the next day of shipping confirm notification email/SMS.  

Q: Why tracking information is not updated for a long time? 

A: Usually it is on the way to your local country, pls be patient. If it is not updated a few days after arriving in your country, pls try to contact us or the carrier for additional information. 

Any other questions, feel free to contact us  support@hifigo.com 

 

Warranty

Hifigo offers 1 year warranty for Consumer Electronic products and so on. Should your product prove to be defective for non-artificial reasons within 1 year from the date of arrival, you can send the defective items back or unit for free repair. Hifigo will be in charge of the maintenance handling fees and replacement charges for defective components found to be defective due to manufacturer’s defect. (this free repair rule does not apply to motherboard & screen).

This warranty extends only to personal use & does not extend to any product that has been used for commercial use, rental use, or use which is not intended. There are no warranties other than expressly set forth herein. This warranty is not transferable.

THE WARRANTY DOES NOT APPLY TO THE FOLLOWING

  • Damage due to accident, dis-assemble, waterlogmisuse, abuse, alterations or vandalism.
  • Improper or inadequate maintenance.
  • Unauthorized modification or commercial use. 
  • Damage in return transit.
  • Unsupervised use by children under 18 years of age.

For the warranty details regarding other goods, please refer to the manufacturer’s original enclosed instruction manual.

Hifigo is not responsible in any way for damages, losses or inconveniences caused by equipment failure or by user negligence, abuse, or use not in accordance with the ‘User Guide’ or any additional safety, use, or warnings included in the product materials. Furthermore, Hifigo is not liable for incidental or consequential damages of any nature resulting from the use of this product and any liability shall not exceed the purchase price of the product.

This warranty gives you specific legal rights. You may also have other rights which vary from state to state.

Please email our customer service support@hifigo.com with your order number and your specific inquiries. Please describe your problems that you encountered with as details as you can.

Returns or Exchange

Can I cancel an order? 

Non- customized order can be cancelled without restocking fee if the product has not been shipped. For customized order, it is not accept for cancellanation after 24 hours you have placed an order. Hope you could understand that we will start production for your customized order once we receive your order in 24 hours.

Can I return the product that I don’t like and get refund?

Some items may be returned for either money back or exchange subject to the following conditions. Our policy is within 7days after receiving according to the tracking record. If 7 days after receiving have gone , unfortunately we can’t offer you a refund or exchange.

  • Any item returned  must be complete with all accessories, hardware, manuals or instructions, and in the same "new" condition as when it was when shipped to you. Please send us the photos or videos of it. 
  • Any item returned incomplete or with physical damage such as scratches etc., excessive signs of use or abuse will not be accepted for return.
  • Any item returned will be evaluated upon receipt. Of course, we cannot give refunds on defective merchandise resulting from mishandling, misuse, tampering or improper use.

Can I exchange product I ordered? 

We offer exchange service if the items in following conditions. (*Except Non-refundable & Non-exchangeable items)
  • Products must in “Good Condition” with no damaged in any way.
  • To exchange a product, the product must be available to purchase on Hifigo.com and its price must be higher or equal to the original order amount.
  • The customer will have to pay the difference in price if s/he selects a product of a higher price.
  • If you have purchased any items with any discount offered by a joint promotion or other promotional activities but the discount offer has expired at the time of the exchange, the discount shall not be taken into account. Discounts offered by companies other than Hifigo shall be dealt with in accordance with the terms and conditions of the relevant companies.

What’s the normal process of cancel, return or refund ?

Please email our customer service hifigo@gmail.com with your order number and your specific inquiries. Please keep the product as original as possible and send us the photos or videos of it.

Which kind of product can be returned and refunded?

All cable/DAC/AMP/UIEM products are returnable if the product is in the same condition as when purchased. CIEM products cannot be returned. Defective products covered under warranty could be returned for servicing, but NOT for refund.

When do items need to be returned by?

No later than 7 days after receiving the product (according to tracking record)

Where do items need to be returned to?

For international shipping, to make your ship back easily, pls contact us and choose your convenience place to ship back to us. If you want to ship back to us, please contact us for our shipping address.

When can i get refund for my product?

We will refund you once we receive your order and after product checking, we will refund you within 3 working days.

How much can I get for refund?

We will charge you 30% of the MSRP for restocking fee and then refund you the rest of the money. For example, if the MSRP is $100, we will refund you $70. If the item is returned without its complete original packaging (original box, foam padding etc.), additional 10% packing fee will apply. 

Who will be responsible for the shipping back fee?

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 provide you with the best shopping experience, we will try our best to choose the best shipping method to you. If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.