Description
The SoundTraxx 884007 TSU-2200 Steam is a 2-amp universal-style Tsunami2 Digital Sound Decoder factory-loaded with the steam locomotive sound profile.
Prime mover: General steam — covers small to medium prototype power (American 4-4-0 through Mountains / Northerns and similar). Includes 10 exhaust chuffs, 90+ whistles, 12 bells, chuff-sync via cam or BEMF.
- Scale fit: HO and S
- Format / connector: Universal (9-pin JST Quick Plug + bare wires)
- Function outputs: 6
- Max motor stall current: 2 A
- Dimensions: 35 x 18 x 6 mm
- Tsunami2 sound: Dynamic Digital Exhaust (reactive to throttle / load), functioning locomotive + train brakes, injectors, power reverse, firebox flicker, 16 sound channels, library of prime movers + horns/whistles + bells
- Hyperlight lighting effects: Mars, Gyralight, Rotary beacon, Single/Double Strobe, Ditch, etc.
- Audio amplifier: 2 W into 8 Ω
- DCC track voltage: 7 – 22 V
- Compliance: Standard NMRA DCC (DC + DCC dual mode)
- SoundTraxx SKU: 884007 (Walthers 678-884007)
Tip: Use the DBX-9000 tender wiring kit (810132) for a clean loco-to-tender quick disconnect. Pair with a Mega Bass speaker (810130 / 810131) and a CurrentKeeper for the best chuff response.
About SoundTraxx: A USA-made DCC decoder and sound-system specialist founded in 1990 (Durango, Colorado). Product lines: Tsunami2 (premium full-feature digital sound decoders), Econami (value-priced sound decoders), Blunami (Bluetooth-controllable sound), and DCC Mobile Decoders (motor + lighting, no sound). Range also includes miniature speakers (round / oval / Mega Bass / Mini Cube), the CurrentKeeper stay-alive supercap module, and a full set of Quick-Plug harnesses and adapters for clean installs.
In stock at Oakville Model Trains Depot.




