2016 QLS HiFi QA730U audio HiFi USB digital interface

QA730U is heritage of QA661 XMOS USB digital interface,and it is asynchronous USB to digital audio coaxial & optical & I2S output device,you can also treat it as a HiFi USB digital sound card.


Use method:
Connect it with computer and tablet PC via USB,then play music.
Connect output of QA730U with the digital input of your DAC or Amplifier via Coaxial or Optical or I2S.


Specification:
Digital output:Coaxial output,optical output,I2S output.
Word clock output,for example:if your DAC has word clock input,such as Hilo,you can connect DAC word clock input via a BNC cable,the sound quality will be improved.
Input voltage:coaxial(0.5V p-p);word clock(3.7Vp-p); I2S(IIS)(3.3V TTL electrical level)
Output impedance:75ohm(coaxial).
Support sampling rate:44.1k  48k   88.2k   96k   176.4k   192k, DSD 64(Dop output)
Sampling Bit:16Bit or 24Bit.
Power:9-12VDC,≥500mA.
Support Mac OS,Linux,do not need driver.
Provide WinXP or Window 10,32/64 driver.
Support iphone,ipad,need Camera Connection Kit or conversion cable,do not need driver.
Support some android phones,use OTG cable,Hiby player.
Unit Size:110mm*130mm*27mm,0.34KG.
Package size:180mm*155mm*63mm,0.60kg



Package:
QA730U *1
USB cable *1
User manual *1
Input AC110-240V,output DC9V DC power supply*1

1.Voltage

Can you change the voltage and plug?Our voltage is 110V or 220V,and our plug is EU,US or others.
Yes,we will change the voltage and plug according to your shipping address.

2.RMA

Hi seller,I bought one device from your shop before,but it is broken now under warranty,can you help me repair it?

Yes,please send the defective device or wrong device to our Chinese address(please contact our salesman).
Once we received it,we will send you the new replacement or refund immediately.

3.Warranty

I bought your product 7 years ago,but it's broken now,can you repair it?
Oh...Dear friend,our warranty is 1 year,would you like have a try of the newest one?

4.Samples

Hi,man,I love your products too much,can you send me a sample to test?I will place big order in future.
Hi,my friend,Please buy products from our Aliexpress store directly.

/store/601461 

5.Shenzhen Shop

Hi,brother,I am going to Shenzhen,China,can I visit your shop?
Yes,my friend,welcome to our shop,you can have a try of your favorite devices,and it would be better if you could inform me in advance,so I can prepare for your needed devices.
Shop address: 4F9,No.3018,Gume,Wanshang Electric City,Huaqiang north road,Futian zone.Shenzhen,China.
T:86-0755-82521355