Wiim Amp Pro Coil Whine / Buzzing Standby

[doublebstyle]

Just got wiim amp pro a couple of days ago , it is making a very low buzzing / coil whine noise in standby mode that can be heard from 1-2 meter or so , is it normal? Or should it be dead silent? Can somebody check also they have the same issue? Speakers are silent, noise is coming from inside either from switching power supply or soc board. I tried unplug all the cables but bananas and still same

 

[harkpabst]

Just got wiim amp pro a couple of days ago , it is making a very low buzzing / coil whine noise in standby mode that can be heard from 1-2 meter or so , is it normal? Or should it be dead silent? Can somebody check also they have the same issue? Speakers are silent, noise is coming from inside either from switching power supply or soc board. I tried unplug all the cables but bananas and still same

No, this is not normal. The WiiM Amp Pro should be dead silent.

Some early revisions of the original WiiM Amp had a noticeable number of devices with this problem. I haven't heard this from any WiiM Amp Pro owner before (including myself).

You can send feedback to WiiM through the WiiM Home app about this hardware issue (tab More => Feedback). But I assume that the unit is defective and probably needs to be replaced.

 

[doublebstyle]

I just unpacked my old wiim amp to check it under the same circumstances and it is dead silent I am returning pro and stick with wiim amp as I really don't have energy to try again. I also had to buy wiim amp twice due to quality problems and I am kind of frustrated. Returning wiim amp pro is just pain in the a.. as I didn't buy it from Amazon and had to bear the cost for return and need to find some printer to print out return info. I am also adding comparison noise for both amps for the ones interested.

 

[harkpabst]

I just unpacked my old wiim amp to check it under the same circumstances and it is dead silent I am returning pro and stick with wiim amp as I really don't have energy to try again. I also had to buy wiim amp twice due to quality problems and I am kind of frustrated. Returning wiim amp pro is just pain in the a.. as I didn't buy it from Amazon and had to bear the cost for return and need to find some printer to print out return info. I am also adding comparison noise for both amps for the ones interested.

I feel your frustration.

However, you've had really, really very bad luck here. Somebody correct me if I'm wrong, but I cannot remember a single case in this forum where a WiiM Amp Pro had developed coil whining. Also, for the original WiiM Amp the problem was limited to PCB version 2 and (to a lesser degree) PCB version 4.

If the WiiM Amp Pro is defective, the seller must repair or replace it. This is not a case of a return because you changed your mind and decided to not keep it. It's broken, the dealer has to fix it.

 

[doublebstyle]

I feel your frustration.

However, you've had really, really very bad luck here. Somebody correct me if I'm wrong, but I cannot remember a single case in this forum where a WiiM Amp Pro had developed coil whining. Also, for the original WiiM Amp the problem was limited to PCB version 2 and (to a lesser degree) PCB version 4.

If the WiiM Amp Pro is defective, the seller must repair or replace it. This is not a case of a return because you changed your mind and decided to not keep it. It's broken, the dealer has to fix it.

Yes but you choose

1.Paying 10 Euros to return it back and close the case and buy it from Amazon next time when there is a discount

2. Try to explain what is coil whine to a person that never heard before asking for replacement sending 5 mails waiting weeks and later you can still get a fault one because they probably have the same batch at their stock.