Kernow / DJH teamed up to create a wonderful little model in the O2, and cleverly designed will take DCC sound very easily - wires are provided for speaker, routed from the boiler
back to the bunker, where a SugarCube7 fits perfectly!
A couple of approaches here... one is a hard-wired MX648, removing the factory 6pin socket board, and the other uses the MX649N 6pin direct plugin (much simpler of course!), which
just fits in the boiler, no modifications at all!