Model as received:
Equipped with a LokSound 5 decoder and DCCSound's Premium speakers:
First, the factory speakers are removed along with the DC dummy plug. Then an ESU LokSound 21-MTC V5 decoder with GM12 sounds is plugged in. DCCSound twin-sugarcube speakers featuring the larger 13x18mm drivers are installed, being a very simple snap-in fit to the chassis. The body shell is refitted. All done!