Coaxial 'pop' no matter what...

[iddison68]

Tried everything with my fully updated 2 month old Wiim Pro plus from changing amps, connections, power supply and resync delay feature for the dac and nothing. Popping when going into standby and sometimes when waking. Only happens over Coaxial. I cannot find a solution. I have had to start a return with the dealer for an exchange. I use an SMSL AO-300 amplifier and also Aiyima A07 MAX Monoblocks. Has anyone had this issue and successfully resolved it or do I have a faulty unit which I think I have as I cannot find a solution regardless of all known remedy...?

 

[WiiM Support]

Tried everything with my fully updated 2 month old Wiim Pro plus from changing amps, connections, power supply and resync delay feature for the dac and nothing. Popping when going into standby and sometimes when waking. Only happens over Coaxial. I cannot find a solution. I have had to start a return with the dealer for an exchange. I use an SMSL AO-300 amplifier and also Aiyima A07 MAX Monoblocks. Has anyone had this issue and successfully resolved it or do I have a faulty unit which I think I have as I cannot find a solution regardless of all known remedy...?

Can you please enable the "Fixed Resolution" setting in the WiiM Home App to see if it helps? Here are the steps:

1. Open the WiiM Home App.
2. Go to the Device tab.
3. Tap the 'Device Setting Gear' icon.
4. Select Audio Settings.
5. Choose SPDIF or Coax Output Resolution.
6. Set it to Fixed Resolution.

 

[iddison68]

Can you please enable the "Fixed Resolution" setting in the WiiM Home App to see if it helps? Here are the steps:

1. Open the WiiM Home App.
2. Go to the Device tab.
3. Tap the 'Device Setting Gear' icon.
4. Select Audio Settings.
5. Choose SPDIF or Coax Output Resolution.
6. Set it to Fixed Resolution.

View attachment 8638

Hi
First of thanks for getting back in touch. I have executed all the above commands and I’m afraid the pop is still there on entering standby mode over coaxial and optical connections. RCA is not affected. It has actually worsened over 24 hours and so I have returned the unit to the dealer for either repair or replacement.

 

[Wiimer]

Popping when going into standby and sometimes when waking. Only happens over Coaxial. I cannot find a solution. I have had to start a return with the dealer for an exchange. I use an SMSL AO-300 amplifier and also Aiyima A07 MAX Monoblocks.

Is the amplifier the cause of that pop noise? Can you connect other devices to the AO-300 for testing?

 

[iddison68]

Is the amplifier the cause of that pop noise? Can you connect other devices to the AO-300 for testing?

It’s a question that was in my mind too but I do not have another digital amp to test it with. My other amps are analogue only. But saying that I did test my PC via the USB connection to the AO-300 to see if there was anything similar and nothing was found, clean shut down, no pop or noise of any kind. I would hazard a guess to say that the USB C input on the AO-300 may have the same PCB board for digital input.

 

[iddison68]

Is the amplifier the cause of that pop noise? Can you connect other devices to the AO-300 for testing?

I will try the TV today with optical to the AO-300. A simple test to see if shutting down the TV while connected to the amps causes any noise.

 

[iddison68]

Ok, no pop with the TV using optical in. Not to worry, thanks for the attention here. The unit has been returned for inspection as it is only 2 months old since purchase. Thanks.