Quote from: Yard Master on June 05, 2023, 10:14:37 AMHi Rich,
As noted above the 66307 CSX GP40 uses a simplified Soundtraxx Sound Value decoder. If you are comfortable doing so, you could swap out the factory installed decoder board for a full feature decoder with more sounds and CV options.
Bachmann is indeed transitioning to using the Econami decoder package in our HO Sound Value brand locomotives, starting with models shipping in 2023. Item #66307 was first shipped in 2022 before this change was made; there will be a transition period as we sell out of the "legacy" Sound Value decoders and we upgrade each model to Econami decoders, in partnership with Soundtraxx.
Thanks all!