Protosound 3

MTH Protosound 3 consisting with DCC and non PS3 units

Matt's Performance Locomotives

Lionel Polar Express - MTH Protosound 3 install

MTH GP38-2 w/ProtoSound 3 CSX YN3 Review!

Northern Ohio Railfanning Productions

Weaver RS11 - Upgraded to MTH Protosound 3

MTH Railking O Scale C30-7 CSX Locomotive with ProtoSound 3

MTH UP 4500HP Gas Turbine - Protosound 3 and Smoke

Challenger upgrade to MTH Protosound 3 (w/upgraded smoke + sound) (TR)

Bachmann Largescale - Emily - w/MTH Protosound 3 + Smoke + Eye movements

MTH Premier Protosound 3 0-8-8-0 Erie Angus

Lionel Hogwarts - MTH Protosound 3 install (KR)

Front End Friday MTH Protosound 3 Premier Preservation Series 4018 Big Boy

MTH Protosound 3 PRR A5, Premier O Scale Pennsylvania Railroad A5 0-4-0 MTH 20-3598-1

MTH Hudson (One Gauge) Upgrade to Protosound 3

MTH HO Hybrid GE ES44AC with ProtoSound 3

Nicholas Smith Trains

Upgrading Proto-Sound Locomotive Files

MTHElectricTrains

mth protosound 3 bigboy upgraded

Pedro the o scale collector

USA Trains FEF #844 (G scale) - Upgrade to MTH Protosound 3 (PL112921)

USA Trains Hudson - MTH Protosound 3 install (+Smoke & Motor upgrade) (070219 - KD )

Upgrading MTH C&O Allegheny with PS3! Full Kit Explanation and Mods!

MTH premier Empire State express Protosound 3 upgrade.

CountryBunker’s Trains