Soundtraxx has two decoders specifically for N-scale. With the popularity of N-scale growing, they have a few items that are suited for these small models. The TSU-750 Micro-Tsunami is a small decoder that will easily fit into many N-scale steam loco tenders, but they have many Micro Tsunami decoders for diesels as well. The TSU-750 for the UP Turbine can easily fit into the N-scale Turbines produced in brass, or the new models produced by Con-Cor. This will give prototypical turbine operation in a compact decoder that should be an easy installation into the model. These decoders are available today.