Amp Camp squeel when first turned on

[tubenut99]

I keep forgetting to ask, has anyone built an amp camp amp? I did mine a few years back, sounds amazing for 8 watts /ch. The only thing I never asked is when I turn the power on it makes a squeel sound for 2-3 seconds, then no hum , nosie etc. Anyone else notice this with their unit? Anyway of troubleshooting it?

 

[rayma]

Brief oscillation instability, maybe from the wiring? Post some clear photos.

 

[TungstenAudio]

This startup noise is from the brick SMPS charging the large capacitance on the output of the amp. It is a feature and not harmful.

 

[adason]

I keep forgetting to ask, has anyone built an amp camp amp? I did mine a few years back, sounds amazing for 8 watts /ch. The only thing I never asked is when I turn the power on it makes a squeel sound for 2-3 seconds, then no hum , nosie etc. Anyone else notice this with their unit? Anyway of troubleshooting it?

Its normal. If it bothers you, make separate delay for speakers.

 

[tubenut99]

Thanks, didn't think it was an issue as it's always sounded excellent.
Thanks