<a href="https://en.wikipedia.org/wiki/Fade_(audio_engineering)" class="extiw" title="w:Fade (audio engineering)">Fader</a> <a href="https://en.wikipedia.org/wiki/potentiometer" class="extiw" title="w:potentiometer">potentiometers</a>.
Taken by <a href="//commons.wikimedia.org/wiki/User:Omegatron" title="User:Omegatron">User:Omegatron</a> using a <a href="https://en.wikipedia.org/wiki/Canon" class="extiw" title="w:Canon">Canon</a> <a href="//commons.wikimedia.org/wiki/Category:Taken_with_Canon_Digital_IXUS_IIs" title="Category:Taken with Canon Digital IXUS IIs">Powershot SD110</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>