Wiim Amp Pro buzzing noise with HDMI and one speaker connector too short?

snazy514

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Apr 11, 2025
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I just received my Wiim amp Pro and after hooking everything up I unfortunately noticed three problems

1. a very annoying buzzing sound when the HDMI cable is plugged in

2. If the HDMI is connected to my TV (Which I also use as a 3rd monitor in this setup) I suddenly have a gigantic input lag but I don't understand how or why? My PC is hooked up to my TV with another HDMI port and the Wiim has the designated Arc port.

3. one of the speaker connectors does not let me plug my Banana plug in as deep as on the other 3 connectors and the "round part of the plugs end" isn't all the way in (I know that the plugs themselves won't go in all the way but this one is further out than the rest). I already swapped the cables through it's the plug.


I really wanna avoid having to rma etc. because it would be annoying to cable manage and hook everything up again so I don't mind the plug problem but the buzzing sound is kind of annoying. If any1 knows a solution I'd be very happy!

My setup is as follows:
1. RCA from my DAC (not pre-out) to the Wiim line in. The DAC is connected to my PC with USB
2. HDMI to ARC port of my TV.

Only when Using the line in and HDMI (on the Wiim) I get a buzzing noise, as soon as I disconnect the HDMI it goes away. If I change the source on the Wiim to HDMI the buzzing is also gone. THis is my first amp with hdmi/arc though.

Gear:
Aune X8 DAC
Wiim Amp Pro
Sony XH90/XH9005
PC --> RTX 3090, Ryzen 9 5900x, N7 B550
 
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