HO DCC Sound Decoder drop in Atlas GenSet. 28 functions.

HO DCC Diesel Sound Decoder with Built-in speaker

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

MRC Sound Decoder 1804 - HO Gauge drop in for Athearn MP15

HO Diesel Sound Decoder with speaker for drop in Athearn RS3

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

HO DCC Steam Sound Decoder with 28mm baffled speaker

HO DCC/DC Steam Sound Decoder with wireless contol