The GP40 was considered the top of EMD’S four-axle line when first offered in the 1960s. It was visually distinguished from earlier GPs by three radiator fans on its long hood. Bachmann’s N scale Sound Value model is SoundTraxx Econami equipped.

Factory-set for GP40 realism, the diesel package offers a choice of 5 prime movers, 16 airhorns, multiple variations of 7 bell types, 2 air compressors, and 3 couplers plus a function-activated grade-crossing signal—all in 16-bit polyphonic sound.

 Econami includes adjustable auto-notching sensitivity for prototypical operation, adjustable master volume and individual sound effect volume levels, advanced consisting, and more. 

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