The company ESU Electronic Solutions has developed prototypical digital sound decoder for locomotives. They also manufactures digital decoder for all locomotives. The decoders Lok Pilot is available in various designs and is equally to be used for DC or AC locos. In addition to the LokSound decoders (for H0 + N); THE LokSound XL decoders for large loco ( G ), are offered. The ESU locomotives are characterized by absolute precision, various sound functions and many digital functions.