This one:
www.rottendog.us
After months of trying to sort an intermittent issue on my original board, was considering one of these before totally out of stock. However, been reading some bad things on an old Pinside thread, particularly about the sound quality.
pinside.com
With shipping and duty it's going to be near £500, so wanting to check beforehand if anyone here has experience of these and if worth it? Not sure if the sound issue has been resolved in later editions.... Ta.

MPU9211 | Rottendog Amusements
Williams System 9, 11, 11A, 11B and 11C MPU Board is completely redesigned and replaces the MPU board in all Williams System 9 through 11B games, INCLUDING ...

After months of trying to sort an intermittent issue on my original board, was considering one of these before totally out of stock. However, been reading some bad things on an old Pinside thread, particularly about the sound quality.
Anyone tried new rottendog system 9-11 board? | Tech: Early solid state | Pinside.com
| Forum Topic by topkat

With shipping and duty it's going to be near £500, so wanting to check beforehand if anyone here has experience of these and if worth it? Not sure if the sound issue has been resolved in later editions.... Ta.