I have a "K-Line by Lionel" 6-22271 Milwaukee Road EP-5 with TMCC & RailSounds.
I'm upgrading it with an Electric RR Cruise Commander M, and was wondering about possible sound upgrades while I have it apart. Lionel describes the sound card for this engine as "RAILSOUNDS 4.0 / GENERIC ELECTRIC". What would the sound differences between it and the _new_ ERR RailSounds Commander EP-5/GG-1 RailSounds series be - are they both 4.0, or is the new ERR board an improvement?
The other possible option, which might be a direct plug-in replacement, would be a sound card from the 6-31753 Great Northern Diesel Freight (TMCC EP-5 Electric), described as "RAILSOUNDS 5.0 / GN EP-5 #375". The sound electronics on this engine seem the same as the 6-22271 (a RailSounds Power Board / Universal), so this might be an easy board swap. I don't know what sound differences there would be between a generic EP-5 board and the custom GN #375. I also don't know the significance of "Must contact Lionel to order" - are they made of unobtainium?
Anyone have any knowledge of this?
Thanks