In 1932 German Deutsche Reichsbahn-Gesellschaft DRG received 1st of 174 samples of four-axle electric loco E44. The four motors delivered 2200 kW and enabled the E44 to reach a maximum speed of 90 km/h. The reliable locos rested in service at DB until 1985, last DR locos quitted service in 1991. For electric service on Bavarian mountain line Freilassing – Berchtesgaden DRG ordered eight samples of electric E44.5. The four-axle four-motor loco developed 2000 kW and reached a maximum speed of 90 km/h
| Key | Functions | Sound slots | Volume CVs | Volume values |
|---|
| F0 | headlights | | | |
| F1 | sound on/off | 1, 2, 5, 23 | 259, 267, 291, 435 | 0, 128, 100, 95 |
| F2 | whistle | 3 | 275 | 128 |
| F3 | bell | 4 | 283 | 128 |
| F4 | fans on/off while standing | | | |
| F5 | station announcement #1 | 18 | 395 | 128 |
| F6 | acceleration/brake time, shunting mode/shunting speed | | | |
| F7 | curve squeal | 15 | 371 | 100 |
| F8 | AUX#1 | | | |
| F9 | compressed air let off | 9 | 323 | 128 |
| F10 | conductor's signal | 10 | 331 | 110 |
| F11 | coupler clank | 8 | 315 | 128 |
| F12 | radio conversation #1 | 19 | 403 | 80 |
| F13 | set/release brake | 13 | 355 | 95 |
| F14 | station announcement #2 | 7 | 307 | 128 |
| F15 | short whistle signal | 16 | 379 | 128 |
| F16 | open/close door | 12 | 347 | 100 |
| F17 | rail clank | 17 | 387 | 100 |
| F18 | station announcement #3 | 14 | 363 | 128 |
| F19 | radio conversation #2 (shunting distance) | 22 | 427 | 80 |
| F20 | pantograph up/down | 20 | 411 | 95 |
| F21 | radio conversation #3 | 24 | 443 | 80 |
| F22 | set/release hand brake | 21 | 419 | 80 |
| F23 | compressor | 6 | 299 | 75 |
| F24 | sound fader | | | |
| F25 | disable brake squeal sound | | | |
Make sure that index CV31 is set to 16 and index CV32 is set to 1 before changing a volume CV.