N scale DCC Sound Decoder /w speaker drop in For Kato FP7 Unit

HO DCC Drop In Diesel sound decoder with Built-in baffled speaker

DCC Sound Decoder drop in For Kato N scale F unit

TCS K0D8 Used Drop-In DCC Decoder For Certain Kato Wide Body N Scale Locos

N scale DCC Sound Decoder /w speaker drop in For Kato F Unit

N scale no sound DCC Decoder drop in for Kato GE-P42

HO DCC Steam Sound Decoder with 23mm baffled speaker

MRC 0001821 HO diesel sound decoder w/28mm speaker drop in for Athearn F