VICE has been the gold-standard Commodore emulator for so long that most users have forgotten a time before it existed. Version 3.9 lands with an update that’s been requested, argued about, and occasionally flamed-about on forums for the better part of two decades: a reworked SID filter model.

Commodore SID 6581 sound chip close-up
The SID chip’s analogue filter has never been perfectly reproducible in software — until, maybe, now.

Why the SID filter is such a big deal

The 6581 SID chip’s analogue filter varies slightly from chip to chip due to manufacturing tolerances — no two SIDs sound quite identical, which is either charming or maddening depending on who you ask. Software emulation has always had to approximate this, and previous attempts have divided the community for years.

  • New filter model closer-matches measured behaviour across multiple physical SID revisions
  • Reduced audible artefacts on filter sweeps in classic SID tunes
  • Configurable per-chip-revision presets for the terminally particular
C64 emulator software interface
VICE remains the reference emulator for accuracy-obsessed Commodore users.

The verdict from the community

Early reaction has been cautiously delighted, which for SID-filter debates counts as a landslide of consensus. If chiptune accuracy is your particular obsession, the update is worth grabbing.