LouD has released a fresh series of videos using the board’s mirrored mode, showing how mono SID tunes can be transformed into something that feels spatial without altering a single note.
This isn’t real stereo. Instead, the USBSID-Pico mirrors the same SID data to two chips at once. One handles the left channel, the other the right. Since each SID is generating the exact same output, the result is a subtle widening of the sound. It tricks your ears just enough to make the C64 sound bigger.
Three demos make up this current batch of faux stereo SID experiments:
Wavemode (2025)
By: Lethargy | Player: Vice SDL2
Download from CSDb →
This demo blends fluid visuals with rhythmic SID sequencing. The mirrored stereo adds space without compromising the tight sync between screen and sound.
Pensive Woman (2025)
By: Lepsi De | Player: Vice SDL2
Download from CSDb →
A reflective piece with a slow, evolving structure. With faux stereo SID, the emotional weight comes across more clearly—each tone floats with a bit more air.
Bad Apple (2025)
By: Arturo Dente | Player: Denise
Download from CSDb →
A well-known demo reworked for the C64. Here, the stereo effect gives the animation soundtrack a richer texture, especially noticeable with headphones.
LouD’s uploads aren’t just technical showpieces—they’re a reminder that small changes in output routing can create a surprising shift in perception. These faux stereo SID demos are worth watching for anyone exploring C64 audio mods or curious how far mono sound can be pushed.
Want to hear the difference yourself? Plug in your headphones and start with Wavemode. The C64 has never sounded quite like this.
