Usually, the sound of the button clicks do not transmit through the audio output. If they do, then there is something wrong. They are usually only audible to the person pushing the button and no one else can hear them.

Gary cool
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)