If you manage to get your hands on this release, look for the factory bank labeled quadraSID_XMAS_Final.sbf . Here are three legendary patches from that collection:
: It recreates the unique "weirdness" and distortion of the 6581 analog filter , with a frequency range adjusted (30 Hz – 10,000 Hz) to mimic the original hardware's characteristics. reFX quadraSID AU VSTi 1.6.2 MERRY XMAS -PC - MAC-