A shorter version of the AMD4, the ASD4 is a drop-in for the Atlas GP7, GP9, GP30, and GP35. It has two LED's (one on the front, and one on the back), and it supports to extra functions by way of soldered on leads.

The ASD4 features the TCS exclusive auto-adjusting BEMF.

SKU: 1279

The AMD4 is drop in for the Atlas: GP-38, RS-11, Dash8-40B, Dash8-40BW, C628, C630, B23-7, B30-7, B36-7, Also DCC ready version of GP-40, GP-40-2, SD-7, SD-9, SD-35, TrainMaster and U25B. It has two extra functions which can be connected by soldering onto provided pads.

The AMD4 features the TCS exclusive auto-adjusting BEMF.

SKU: 1029

Not yet in production. The ALD4 is going to be a drop-in for the longest Atlas N Scale locomotives.