The emulator VICE emulates the video chip's interference with the audio output.<p>When I heard that faint hum again, that changed in timbre with the flashing of the cursor, I was floored.
<a href="https://i.imgur.com/loQonuM.jpg" rel="nofollow">https://i.imgur.com/loQonuM.jpg</a>
to be clear, this image means "so unnecessary (but I like it so much)", I still keep a GBC in my nightstand.