AP is famous for their hard work on the Pro range of sound packs for various locomotives back in Train Simulator 2020. They did work on diesel and electric units plus a variety of wagons. I know TSW's devs do say on every DLC they've gone to extreme lengths to ensure the DLC is spot on but unfortunately some locomotives and wagons could do better.... For example the class 47 GRN and BLU, they sound very different(so which one's covered more sounds) or class 09 and 08 (minor variation between the units). I can't really comment on the MK1's Mk2's and Mk3's at the moment. I mean why not, there's a bunch of folks there that specialize in sound engineering so might as well take advantage of this.
Cant be a coincidence that the best, most accurate sounding locos (33 and 45) are 3rd party. The non 3rd party engine sounds are very good imo. The horns for some reason are way off.
I've sent an e-mail to AP about this but they said it's not possible to create sound packs for TSW stock. I don't know about the future of this idea. Maybe DTG devs know more.
