The upcoming Stirling Single model features an updated sound project thanks to an ESU Loksound V5 decoder.
Here is a video to demonstrate the various sound functions. This model is due to be delivered in Autumn 2024, you can order one here:
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Function List:
F0 Firebox Glow
F1 Sound on/off
F2 Brake Function
F3 Playable Whistle
F4 Short Whistle
F5 Guard’s Whistle (with answering whistle)
F6 Heavy Mode
F7 Train Set Mode
F8 Coupling/Uncoupling
F9 Coal Shovelling
F10 Coasting
F11 Injector
F12 Blower
F13 Safety Valves
F14 Drain cocks
F15 Ejector Sound OFF
F16 Water Tank Filling
F17 Flange Squeal/Track Creak
F18 Sound Fade Out
F19 Shunt Mode
The whistle sound on the 2nd production run of Stirling Singles has been changed to an archive recording of the real locomotive.
If you wish to, you can change the whistle sound back to that used on the first production run by changing CV163 to 1.

To return to the default whistle (archive recording), change CV163 to 0.
The Guards Whistle plays when F5 is pressed but when released, an acknowledgment whistle from the locomotive will play.
F7 Train Set Mode sharpens up the responses of your locomotive, this is to simulate DC operation on DCC to give a ‘train set’ feel to driving your Stirling Single.
F14 Drain cocks and F17 Flange Squeal/Track Creak will work only when running at low speed, as your model accelerates they will mute above a certain speed step.
F19 Shunt Mode limits the top speed and sharpens up the responses of your locomotive when activated and make it easier to perform shunting operations such as making up trains.
Thanks to That Model Railway Guy for filming and editing this video.
/ @thatmodelrailwayguy