GUSTARD A18 AK4499 Digital to Analog Convertor (DAC)

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| 6 Questions
Regular price $649.99 USD
Sale price $649.99 USD Regular price
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Functions and features:

Use AKM's flagship DAC chip AK4499EQ.

USB uses XMOS's xCORE-200 series 16 core XU216 processor, supports native DSD and 32bit PCM.

Use 2 American ACCUSILICON femtosecond crystal oscillators as the global masterclock.

The digital processing system uses Intel's ALTERA's large high-speed CPLD logicarray chip.

MQA version supports MQA full decoding.

Highly recognizable white light OLED display, simple user interface,full function remote control.

High-quality toroidal transformer, multiple sets of linear voltage regulators,and TI high-current ultra-low noise LDO chips used in key parts.

LME49860*6 high performance operational amplifier composes analog circuit.

Use one thousandth error high precision low temperature drift resistors in key parts of the Analog circuit part.

Product specifications

Sample rate supported by digital input channels:

COAX:PCM 16-24bit/44.1-192kHz; DSD DOP64

AES:PCM 16-24bit/44.1-192kHz; DSD DOP64

OPT:PCM 16-24bit/44.1-192kHz;DSD DOP64

USB:PCM 16-32bit/44.1-768kHz; DSD DOP64-D0P256; NATIVE DSD:DSD64-DSD512

IIS:PCM 16-32bit/44.1-768kHz; DSD DOP64-DOP256; NATIVE DSD: DSD64-DSD512

BT Bluetooth 5.0: PCM LDAC,AAC,SBC,APTX, APTX LL,APTX HD and other high frequency 
encoding,LDAC can achieve 24B/96K high code transmission

* USB input supported operating system: WIN7 SP1/WIN8/WIN10 32-64bit;macOS;Linux

Analog output performance:

Amplitude frequency response:20-20kHz/+ -0.6dB
THD+N:<0.00015% 1kHz
IMD: <0.0008%@-3dBFs
RCA Output level: 3Vrms (VOLUME 00dB)
Output impedance 100 ohms

XLR Output level: 6.OVrms (VOLUME 00dB)
Output impedance 100 ohms

0ther specifications:

AC Power supply: AC 115V/230V 50/ 60Hz
Power consumption: <15W
Dimensions: Width 220mm*Height50mm*Depth 170mm
Weight: 2.5Kg 


Shipping Fees

Worldwide Free Shipping on SHENZHENAUDIO, Please allow 1-3 business days for conduct Quality Control in order to ensure the products quality.

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