During the switching between sleep and wake-up states, the speaker emits a slight popping sound!

[ue650]

I recently upgraded the Wiim Amp from the regular version to the Wiim Amp Ultra, but I found that the speaker of the Amp Ultra makes a slight crackling sound when switching between sleep and wake-up. The previous Amp didn't have this problem. Excuse me, what caused it? (The installation environment is the same as Amp itself.)

 

[Mr Ee]

Welcome.

Can't read the post, but from the title, yes, that's normal behaviour.

 

[QuarryHunslet]

I recently upgraded the Wiim Amp from the regular version to the Wiim Amp Ultra, but I found that the speaker of the Amp Ultra makes a slight crackling sound when switching between sleep and wake-up. The previous Amp didn't have this problem. Excuse me, what caused it? (The installation environment is the same as Amp itself.)

I don't get a popping sound or crackle with my Amp Ultra, but I do get a very quiet popping sound from my WiiM Amp when I power up from standby.

 

[ue650]

Your situation is the exact opposite of mine. My previous Wiim amplifier didn't make any popping sounds when I woke up.