If you are in the need for a SID replacement for your C64 or looking to use more than one SID then we have what you are looking for. New to the Protovision Shop, we have the ARMSID and MixSID (Double-SID board). If you need SID chips to go along with the MixSID then we also stock the ARM2SID for you with this board. We only have limited stock so order yours before they sell out.