A1/A3 Sound Decoder Manual 27 August 2020 15:59 Updated 4-1505a_a1-a3_class_sound_manual.pdf 10 MB Download Related articles Class 66 TTS Sound Manual HSS 388B A1 - A3 Locomotive HSS 316 Flying Scotsman Class A1 (Railroad) R8249 Locomotive Decoder Manual HSS 284B Class A1 / A3
