Evie Salomon, creator of the BackBit cartridge and other Commodore bits (!), has released the BackSID, a replacement for the 6581/8580 SID chip in the Commodore 64/128/64C/128DCR.  BackSID auto-detects into which Commodore it is installed, and with an 
upcoming C64 configuration program, the user will be able to customize the settings and upgrade the firmware.  Not only does BackSID offer good sound but also supports inputs, like mouse, paddles, and Koalapad.  It does not offer audio pass-through.  For 
more BackSID details, see

https://store.backbit.io/product/backsid/

To see Evie's video presentation of the BackSID, see

https://youtu.be/vhtraERrMNw?t=161

To see the rest of Evie's products, see

https://store.backbit.io/

The BackSID is very reasonably priced at $29 US, not including shipping.

Truly,
Robert Bernardo
Fresno Commodore User Group - http://www.dickestel.com/fcug.htm
Southern California Commodore & Amiga Network - http://www.portcommodore.com/sccan
Nov. 6-7 Commodore Los Angeles Super Show 2021 - http://www.portcommodore.com/class

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