● Internal playback storage: one external SD card or TF card with card cover, in FAT32 format, the upper limit is 512GB.
● The supported code rate: 16- 32Bit, 44.1KHz ~ 352.8KHz, DSD64 ~ DSD128.
●USB interface-USB B port: Adopting authorized Italian interface Combo 384 and optimize hardware design, supports 32Bit/384KHz PCM and DSD256.
●USB interface -Micro port: Using SA9227 interface, iOs phones and PC do not need camera kits, with 32Bit/384KHz PCM and DSD128.
● Bluetooth: Bluetooth 5.0, supports AAC and SBC.
● Coaxial input: 75Ω matched impedance, supporting 24Bit/ 192KHz and DSD64 (DoP).
● Optical input: supports 24Bit/ 192KHz and DSD64 (DoP).
● Coaxial output: 0.5Vp- p75Ω, supports 24Bit/ 192KHz and DSD64 (DoP).
● Optical output: supports 24Bit/ 192KHz and DSD64 (DoP).
Analog output parameters:
Frequency response: 20-20KHz.
Dynamic range: 121dB.
Separation degree: 120dB.
Low output level:
RCA (L&R) 2.5V (preamp closed).
XLR (L&R) 5.0V ((preamp closed)
SE (unbalanced) Max 10.5Vrms (high voltage in amp, ultra-high gain, 600Ω load).
BAL (balanced) Max 21Vrms (high voltage in amp, ultra-high gain, 600Ω load).
●The supported impedance of headphones: 80-600Ω.
● Decoding chip: ES9038PROx 1.
● Volume control (including preamp volume control): PGA2311UA analog program-controlled.
● Reference clock jitter: 0.038 picoseconds (38 femtoseconds).
● Charging interface: Type-C port or DC port, which supports fast charging and is compatible with QC standards.
● External power supply: DC 5.5*2.1 port, which can also be charged at the same time (panel switch).
● Battery life: about 8.5 hours (depending on setting, music format and load).
● Charging time: Type-C standard: 8~ 9 hours, Type-C fast charging /DC port: 4~ 5 hours.
● The Material of unit & remote control: Aluminum CNC
● Product weight: 3.1kg (Included the package)
● Size: 20cm X 18cmx4.45cm,
package size: 33cm X 27cm x 9cm
1. QA390 limited version *1
2. SanDisk 64GB TF card with card set) *1
3. USB3.0 card readers *1
4. USBAD to port B cable *1
5. TYPE-C charging cable *1
6. External power supply (charging) *1
7. Infrared remote controller *1
Single-ended headphone port rated output power:
32Ω, 1000mW/ch high voltage, high gain
300Ω, 360mw/ch high voltage, super high gain
600Ω, 180mW/ch high voltage, super high gain
Balance the headphone port rated output power:
32Ω, 1300mW/ch voltage, high gain
300Ω, 1200mW/ch high voltage, super high gain
600Ω, 720mW/ch high voltage, super high gain
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.
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.
ShippingTo 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 email@example.com.