The Atlas 10003797 U33B Conrail #2910 Gold model in HO scale offers DCC and sound features (the picture might show a different road number). In the late 1960s, GE introduced the 3,300hp four - axle U33B locomotive, with 137 units produced from September 1967 to August 1970. In 1970, GE launched the 3,600hp U36B. Both models had the same external look and were powered by the GE FDL - 16 cylinder four - stroke engine. The U33B and U36B from Atlas come in early and late phases. The early phase has flush - mounted radiator and air intake screens on the long hood and a built - out area on the top of the pilots. The late phase features corrugated screens and a flat pilot face. An optional electrical equipment box is included on the left - side walkway behind the cab as per the prototype. Key features include a newly upgraded cab, separately - applied scale detail parts, a five - pole skewed armature motor with dual flywheels, directional lighting with golden - white LEDs, and blackened metal wheels. For DCC operation, it supports all programming modes, has flexible function key mapping, and six function outputs. The LokSound Select Dual - Mode decoder allows use on both DC and DCC layouts. There are over 20 sound effects, 16 user - selectable horns, 2 user - selectable bells, and 2 user - selectable synchronized brake squeals, along with manual and automatic notching modes for a realistic experience.

Using your Atlas U33B locomotive is straightforward. If you're using a DCC layout, simply connect the locomotive to the track and use your DCC controller to operate it. The locomotive supports all DCC - programming modes, so you can map the function keys according to your preference. For DC operation, thanks to the LokSound Select Dual - Mode decoder, you can also run it on a DC layout. But remember, the Atlas Quantum Engineer won't work on an analog (DC) layout for locomotives with this decoder. Also, on a DC - powered layout, you can't couple a DCC and sound - equipped locomotive with one that doesn't have both features. When it comes to sound, you have a variety of effects to choose from. You can switch between manual and automatic notching modes while the locomotive is running for a more realistic experience. For maintenance, keep the locomotive clean. Regularly check the wheels for any dirt or debris and clean them gently. Also, inspect the separately - applied scale detail parts like windshield wipers and grab irons to make sure they're in place. If you notice any issues, refer to the product manual or contact customer support.