Has anyone tested this opa1622 op amp? Won't the resistors and custom circuit damage the xd05 pro device? I tested it and it makes a soft popping noise during play/stop. It has a warm, mellow sound and wider than opa1612.

Yes, of course.

I can thank the Amazon seller that the xduoo service responded to the problem. After that, I kept in touch with the xduoo service by email.

Yes, The xduoo engineer promised to send a modified module (with a different resistor). This price: 20usd

Hi everybody! My package was delivered by the xduoo service today. For white noise, I get an amp module that the service modified. Price: 20usd

Electric, ticking, crackling noise. This is normal, it was also present with topping g5. Then you also have volume control inaccuracy. :)

If I turn the volume control slowly or quickly, doesn’t matter.

Thank you!

The digital volume knob sometimes moves 2 steps forward. Anyone else experiencing this?

I don’t experience different charging options.

Thank you for the feedback! Then my unit works fine, as does yours. One thing I don't understand is why the manufacturer writes differently in the user manual. You can check it too.

When the battery is fully charged, is the led red or green? For me it will be red light when it is charged to 100%.

Hi, I am currently using LME operational amplifiers with bluetooth. A slight noise can be heard between start-pause only when I press it, the bluetooth receiver chip causes the noise, but it is not disturbing. I can hear it with all operational amplifiers. If you only hear the noise at the LME...

I am experiencing this error in bluetooth mode (ldac codec). In Eco mode, also with stock amp.