Credit for this recording belongs to mrjamie100, who recorded this with their zoom h1essential microphone :)
This recording was taken on service 2H11, the 1412 departure from Edinburgh Waverley to Helensburgh Central.
Thumbnail image: 334024 at Garscadden.
Traction Motors: 3-phase AC Motor Alstom "ONIX AC", 4x270~kW.
Traction System: Alstom ONIX 800 IGBT-VVVF (1C4M)
Audio license is included in the channel description!