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The SoundTraxx 884009 is a TSU-4400 Tsunami2 digital sound decoder with the Steam-2 sound set. Tsunami2 combines a 16-bit sound system, Hyperdrive2 motor control, Hyperlight lighting effects and a full NMRA-compliant DCC decoder on one board, driven by a 32-bit processor with 16 polyphonic sound channels. This version is the big-scale decoder: a 4-amp motor rating and screw terminals instead of solder joints, rated 4A and suited to some S, O and Large Scale locomotives. Dynamic Digital Exhaust reads the load on the motor and notches the engine up and down on its own, so the locomotive sounds like it is working for its train. Features 90 selectable whistles — 27 more than the standard Steam set — plus 10 exhaust chuffs, 12 bells, 10 airpumps and 8 dynamos Dynamic Digital Exhaust (DDE) matches exhaust volume and RPM to the load on the motor automatically Independent and train brakes with adjustable rates Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 6 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 884009 Model: TSU-4400 Tsunami2 Sound Set: Steam-2 Steam Scale: some S, O and Large Scale locomotives Decoder Size: 69 x 30.5 x 14mm Connection: Universal-style with screw terminal blocks (no soldering) Max. Motor Stall Current: 4A Function Outputs: 6 Audio Amplifier: 3 Watt, 8-Ohm Load DCC Track Voltage: 7V – 27V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other Steam-2 sound profile decoders. A speaker is not included — browse DCC speakers rated 3 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Will this fit my locomotive?It measures 69 x 30.5 x 14mm and connects by universal-style with screw terminal blocks (no soldering). Check that against the space in your shell before ordering — other Tsunami2 versions use different connectors and sizes. Is a speaker included?No. Pair it with an 8-ohm speaker rated 3 watt or better that fits your shell. How is Steam-2 different from the standard Steam set?The chuffs, bells, airpumps and dynamos are the same. The difference is the whistle library: Steam-2 offers 90 whistles against 63 on the standard Steam set, with many roadname-specific additions. Does it run on DC?Yes. Tsunami2 runs on a standard DC power pack as well as DCC, though sound and lighting options are limited on DC. Full function control needs a DCC system.

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The SoundTraxx 885022 is a TSU-2200 Tsunami2 2-amp DCC sound decoder carrying the EMD-2 diesel sound set. EMD-2 is SoundTraxx's second collection of EMD prime movers, covering the 567, 645 and 710 variants that the standard EMD profile leaves out. If you model a GP9, SD9, GP39, SD45, GP60, SD70MAC or any of the other locomotives listed below, this is the sound set built for it. Tsunami2 combines a full sound system, Hyperdrive2 motor control, Hyperlight lighting effects and a DCC decoder on one board. A 32-bit processor drives 28 functions and 16 polyphonic sound channels, so the prime mover, horn, bell and brake squeal all play at once without cutting each other off. Dynamic Digital Exhaust reads the load on the motor and notches engine RPM up and down on its own, so pulling a heavy train upgrade actually sounds like work. This is a universal, hardwire-style decoder measuring 35 x 18 x 6mm, sized for a wide range of HO and S scale diesels. Which Locomotives Does the EMD-2 Sound Set Cover? The 885022 carries eight selectable EMD prime movers. Pick the one that matches your locomotive with a single CV change. Locomotive assignments below follow SoundTraxx's own diesel sound selection reference. EMD 567, 12-cylinder, no transition NW2, NW3, NW5, SW7, SW9, SW1200 EMD 567C, 16-cylinder, non-turbo F9, FP9, GP9, SD9 EMD 645E, 12-cylinder, non-turbo GP15-1, GP15AC, SW1500, SW1504, MP15AC, MP15DC EMD 645E, 12-cylinder, turbo GP39, GP39-2, SD39, SDL39 EMD 645F, 16-cylinder, turbo GP40X, GP50, SD40X, SD50 EMD 645E, 20-cylinder, turbo F45, FP45, SD45, SD45X, SD45-2, SDP45, SD45T-2 EMD 710G, 12-cylinder F59PH, F59PHI, GP59 EMD 710G, 16-cylinder GP60, GP60M, GP60B, SD60, SD60M, SD60I, SD60F, SD70, SD70M, SD70I, SD70ACU, SD70MAC, SD70M-2, SD75I, SD75M Features Eight EMD-2 prime movers selectable by CV, covering the 567, 645 and 710 engines listed above Over 40 selectable air horns, plus bells, air compressors, couplers and dynamos, for more than 50 individual sound effects Dynamic Digital Exhaust (DDE) matches exhaust volume and engine RPM to the load on the motor automatically Three braking types: independent, train and dynamic braking, each with variable load sound Hyperdrive2 motor control for smooth creep-speed switching and prototypical momentum Over 20 Hyperlight lighting effects spread across six function outputs 16 polyphonic sound channels so horn, bell and prime mover never cut each other off CurrentKeeper ready with an onboard quick-plug connector for the SoundTraxx 810140 2-watt audio amplifier into an 8-ohm load, enough for a full-size HO speaker Specifications Item Number: SoundTraxx 885022 UPC: 812165023257 Decoder Model: TSU-2200 Tsunami2 Sound Profile: EMD-2 Diesel Scale: HO to S scale Connection Type: Universal hardwire Decoder Size: 35 x 18 x 6mm Max. Motor Stall Current: 2A Max. Function Current: 100mA (each output) Function Outputs: 6 Audio Amplifier: 2 Watt, 8-Ohm Load DCC Track Voltage: 7.5V to 22V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Brand: SoundTraxx Frequently Asked Questions What is the difference between the EMD and EMD-2 sound sets?Both cover EMD diesels. The original EMD profile carries the most common prime movers, such as the 567 non-turbo in F-units and early Geeps and the 645 turbo in the SD40-2 and SD45. EMD-2 carries a second group of engines, including the 567C in the GP9 and SD9, the 645E 20-cylinder in the SD45 family and the 710G 16-cylinder in the SD60 and SD70 series. Check the coverage table above for your locomotive. If it is not listed there, the 885005 EMD profile is the one you want. Will this fit my locomotive?The TSU-2200 is a universal hardwire decoder measuring 35 x 18 x 6mm, intended for HO and S scale diesels. It is not a drop-in board replacement. You wire it to the motor, pickups, lights and speaker. If your locomotive has a decoder plug, look at the TSU-PNP8 or TSU-21PNEM8 versions of the same sound set instead. Is a speaker included?No. The onboard amplifier is rated 2 watts into an 8-ohm load, so choose any 8-ohm speaker that fits your shell from our DCC speakers range. What does the 2-amp rating mean?It is the maximum motor stall current the decoder can handle. Two amps covers virtually every HO diesel, including twin-motor units. Smaller single-motor installs can also use the 1-amp TSU-1100 version. Do I need a CurrentKeeper?It is optional and well worth it. The 810140 CurrentKeeper is a capacitor pack that carries the decoder across dirty track, frogs and turnouts so the sound does not reset. This decoder has the quick-plug connector for it built in. Does it work on a DC layout?Yes. Tsunami2 runs on analog DC out of the box, though sound and lighting features are limited compared with DCC operation. Full function control needs a DCC system. How do I select a different prime mover?Each engine in the coverage table is chosen with a single CV setting, documented in the Tsunami2 diesel user guide included with the decoder. You can change it as often as you like, so one decoder can be re-tasked if you sell or re-motor the locomotive. Explore More Browse the full SoundTraxx range, compare every DCC decoder we stock, or see the other EMD-2 sound profile decoders, including the 4-amp TSU-4400 for larger installs and the TSU-N18 for N scale. You will also need a speaker, so browse our DCC speakers, and most installs go easier with parts from DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts.

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The SoundTraxx 885005 is a TSU-2200 Tsunami2 digital sound decoder with the EMD sound set. Tsunami2 combines a 16-bit sound system, Hyperdrive2 motor control, Hyperlight lighting effects and a full NMRA-compliant DCC decoder on one board, driven by a 32-bit processor with 16 polyphonic sound channels. This version is the universal-style decoder that fits most HO diesels, rated 2A and suited to HO to S scale. Dynamic Digital Exhaust reads the load on the motor and notches the engine up and down on its own, so the locomotive sounds like it is working for its train. Features 9 EMD prime movers: EMD 567 No Transition, EMD 567 Non-Turbo, EMD 567 Turbo, EMD Dual 567, EMD 645 Non-Turbo, EMD 645 Turbo, EMD Dual 645 Turbo, EMD 710 Turbo, EMD 710 G3C-T2 Over 40 air horns and 13 bells, plus air compressors, couplers and dynamos Dynamic Digital Exhaust (DDE) matches exhaust volume and RPM to the load on the motor automatically Three braking types: independent, train and dynamic braking Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 6 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 885005 Model: TSU-2200 Tsunami2 Sound Set: EMD Diesel Scale: HO to S scale Decoder Size: 35 x 18 x 6mm Connection: Universal-style hardwire with an NMRA 9-pin JST harness Max. Motor Stall Current: 2A Function Outputs: 6 Audio Amplifier: 2 Watt, 8-Ohm Load DCC Track Voltage: 7V – 22V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other EMD / EMD-2 Diesel decoders. A speaker is not included — browse DCC speakers rated 2 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Will this fit my locomotive?It measures 35 x 18 x 6mm and connects by universal-style hardwire with an nmra 9-pin jst harness. Check that against the space in your shell before ordering — other Tsunami2 versions use different connectors and sizes. Is a speaker included?No. Pair it with an 8-ohm speaker rated 2 watt or better that fits your shell. Which prime movers do I get?All 9 listed above, selectable via CV 123. You are not locked to one engine sound — pick whichever matches your prototype. EMD or EMD-2 — which do I want?This is the EMD set: the common 567, 645 and 710 prime movers. The separate EMD-2 set carries a second group of less-common variants called out by cylinder count. Match the list above to your prototype. Does it run on DC?Yes. Tsunami2 runs on a standard DC power pack as well as DCC, though sound and lighting options are limited on DC. Full function control needs a DCC system.

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The SoundTraxx 885032 is a TSU-KN1 Tsunami2 digital sound decoder with the Kato N sound set. Tsunami2 combines a 16-bit sound system, Hyperdrive2 motor control, Hyperlight lighting effects and a full NMRA-compliant DCC decoder on one board, driven by a 32-bit processor with 16 polyphonic sound channels. This version is the first plug-and-play Tsunami2 for Kato N-scale locomotives, supplied with a full install kit, rated 500mA and suited to N scale (Kato). Dynamic Digital Exhaust reads the load on the motor and notches the engine up and down on its own, so the locomotive sounds like it is working for its train. Features 8 prime movers spanning EMD, GE and ALCO: EMD 567C 16-cylinder non-turbo, EMD Dual 567 (E-units), EMD 645E 12-cylinder turbo, EMD 645F 16-cylinder turbo, EMD 645E 20-cylinder turbo, EMD 645 Turbo 2nd generation, GE 7FDL-16, ALCO 244 Turbo Complete install kit included: decoder, Mini Cube 3 speaker and baffle, speaker wire, Kapton tape and two Sunny White LEDs 44 air horns and 14 bells, plus air compressors Dynamic Digital Exhaust (DDE) matches exhaust volume and RPM to the load on the motor automatically Three braking types: independent, train and dynamic braking Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 4 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 885032 Model: TSU-KN1 Tsunami2 Sound Set: Kato N Diesel (Kato N) Scale: N scale (Kato) Decoder Size: 55 x 13.8 x 3.2mm Connection: Plug-and-play board replacement for Kato N-scale locomotives Max. Motor Stall Current: 500mA Function Outputs: 4 Audio Amplifier: 1 Watt, 8-Ohm Load DCC Track Voltage: 7V – 22V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other EMD / EMD-2 Diesel decoders. A speaker and baffle are included in the box. Find extra install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Will this fit my locomotive?It measures 55 x 13.8 x 3.2mm and connects by plug-and-play board replacement for kato n-scale locomotives. Check that against the space in your shell before ordering — other Tsunami2 versions use different connectors and sizes. Do I need to buy anything else?No. The TSU-KN1 ships as a complete kit — decoder, Mini Cube 3 speaker and baffle, speaker wire, Kapton tape and two Sunny White LEDs. It is designed for Kato N-scale E-units, F-units, F40PH, PA and P42 locomotives. Does it run on DC?Yes. Tsunami2 runs on a standard DC power pack as well as DCC, though sound and lighting options are limited on DC. Full function control needs a DCC system.

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The SoundTraxx 885613 is a BLU-PNP8 Blunami digital sound decoder with the EMD sound set. Blunami is a Tsunami2 with a Bluetooth radio added, so it runs three ways: as a normal DCC decoder on any NMRA-compliant system, on plain DC, or in wireless mode straight from your phone or tablet. Wireless mode needs no command station and no programming track — an old DC power pack and the free Blunami app are enough, and CVs can be read and changed over Bluetooth while the locomotive is running. The app is free for iOS and Android. This version is a drop-in replacement for the factory AT-style board in many HO diesels, suited to HO to S scale. Features 9 EMD prime movers: EMD 567 No Transition, EMD 567 Non-Turbo, EMD 567 Turbo, EMD Dual 567, EMD 645 Non-Turbo, EMD 645 Turbo, EMD Dual 645 Turbo, EMD 710 Turbo, EMD 710 G3C-T2 Over 40 air horns and 13 bells, plus air compressors, couplers and dynamos Bluetooth control from the free Blunami app (iOS and Android) — over 300 settings without editing a single CV by hand Dynamic Digital Exhaust (DDE) automatically matches exhaust volume and RPM to the load on the motor, and the app calibrates it for you Three braking types: independent, train and dynamic braking Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 8 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 885613 Model: BLU-PNP8 Blunami Sound Set: EMD Diesel Scale: HO to S scale Decoder Size: 74 x 17 x 5mm Connection: Drop-in AT-style board replacement Max. Motor Stall Current: 2A Function Outputs: 8 Audio Amplifier: 2 Watt, 8-Ohm Load DCC Track Voltage: 7V – 22V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Control Modes: DC, DCC and Bluetooth wireless Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other EMD / EMD-2 Diesel decoders. A speaker is not included — browse DCC speakers rated 2 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Do I need a DCC system to use this?No. That is the point of Blunami. It runs on a plain DC power pack with no command station at all — you control it from the free Blunami app over Bluetooth. It is also a fully NMRA-compliant DCC decoder if you already run DCC. Does the app work on Android?Yes. The free Blunami app is published for both iOS and Android. (Some older listings and dealer pages still say iOS only — that is out of date.) Is a speaker included?No. Pair it with an 8-ohm speaker rated 2 watt or better that fits your shell. Which prime movers do I get?All 9 listed above, selectable in the app or via CV 123. You are not locked to one engine sound — pick whichever matches your prototype. EMD or EMD-2 — which do I want?This is the EMD set: the common 567, 645 and 710 prime movers. The separate EMD-2 set carries a second group of less-common variants with specific cylinder counts. Check your locomotive’s prime mover against the list above before ordering. Will it fit my locomotive?This one measures 74 x 17 x 5mm and connects by drop-in at-style board replacement. Check the space in your shell against that footprint before ordering — other Blunami versions use different connectors and sizes.

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The SoundTraxx 885620 is a BLU-4408 Blunami digital sound decoder with the Baldwin & Other sound set. Blunami is a Tsunami2 with a Bluetooth radio added, so it runs three ways: as a normal DCC decoder on any NMRA-compliant system, on plain DC, or in wireless mode straight from your phone or tablet. Wireless mode needs no command station and no programming track — an old DC power pack and the free Blunami app are enough, and CVs can be read and changed over Bluetooth while the locomotive is running. The app is free for iOS and Android. This version is the big-scale Blunami: a 4-amp motor rating and screw terminals instead of solder joints, suited to S, O and Large Scale. Features 12 Baldwin & Other prime movers: Baldwin VO, Baldwin 608NA, Baldwin 608A, Baldwin 606NA, Rio Grande Southern Galloping Goose, Dual Whitcomb, Fairbanks-Morse, GE GTEL UP “Slab Side”, GE GTEL UP “Veranda”, GE GTEL UP “Big Blow” A unit, GE GTEL UP “Big Blow” B unit, Cummins QSK19C x3 GenSet Over 40 air horns and 13 bells, plus air compressors, couplers and dynamos Bluetooth control from the free Blunami app (iOS and Android) — over 300 settings without editing a single CV by hand Dynamic Digital Exhaust (DDE) automatically matches exhaust volume and RPM to the load on the motor, and the app calibrates it for you Three braking types: independent, train and dynamic braking Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 8 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 885620 Model: BLU-4408 Blunami Sound Set: Baldwin & Other Diesel Scale: S, O and Large Scale Decoder Size: 69 x 30.5 x 14mm Connection: Screw terminal blocks (no soldering) Max. Motor Stall Current: 4A Function Outputs: 8 Audio Amplifier: 3 Watt, 8-Ohm Load Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Control Modes: DC, DCC and Bluetooth wireless Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other Baldwin & Other sound profile decoders. A speaker is not included — browse DCC speakers rated 3 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Do I need a DCC system to use this?No. That is the point of Blunami. It runs on a plain DC power pack with no command station at all — you control it from the free Blunami app over Bluetooth. It is also a fully NMRA-compliant DCC decoder if you already run DCC. Does the app work on Android?Yes. The free Blunami app is published for both iOS and Android. (Some older listings and dealer pages still say iOS only — that is out of date.) Is a speaker included?No. Pair it with an 8-ohm speaker rated 3 watt or better that fits your shell. Which prime movers do I get?All 12 listed above, selectable in the app or via CV 123. You are not locked to one engine sound — pick whichever matches your prototype. Will it fit my locomotive?This one measures 69 x 30.5 x 14mm and connects by screw terminal blocks (no soldering). Check the space in your shell against that footprint before ordering — other Blunami versions use different connectors and sizes.

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The SoundTraxx 885619 is a BLU-4408 Blunami digital sound decoder with the ALCO sound set. Blunami is a Tsunami2 with a Bluetooth radio added, so it runs three ways: as a normal DCC decoder on any NMRA-compliant system, on plain DC, or in wireless mode straight from your phone or tablet. Wireless mode needs no command station and no programming track — an old DC power pack and the free Blunami app are enough, and CVs can be read and changed over Bluetooth while the locomotive is running. The app is free for iOS and Android. This version is the big-scale Blunami: a 4-amp motor rating and screw terminals instead of solder joints, suited to S, O and Large Scale. Features 9 ALCO prime movers: ALCO 539 Turbo, ALCO 539 Non-Turbo, ALCO 244 Turbo, ALCO 251A i6, ALCO 251C v12, ALCO 251C v12 Super Charged, ALCO 251C v12 Century Series, ALCO 251C v16, ALCO 251C v16 Super Charged Over 40 air horns and 13 bells, plus air compressors, couplers and dynamos Bluetooth control from the free Blunami app (iOS and Android) — over 300 settings without editing a single CV by hand Dynamic Digital Exhaust (DDE) automatically matches exhaust volume and RPM to the load on the motor, and the app calibrates it for you Three braking types: independent, train and dynamic braking Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 8 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 885619 Model: BLU-4408 Blunami Sound Set: ALCO Diesel Scale: S, O and Large Scale Decoder Size: 69 x 30.5 x 14mm Connection: Screw terminal blocks (no soldering) Max. Motor Stall Current: 4A Function Outputs: 8 Audio Amplifier: 3 Watt, 8-Ohm Load Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Control Modes: DC, DCC and Bluetooth wireless Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other ALCO sound profile decoders. A speaker is not included — browse DCC speakers rated 3 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Do I need a DCC system to use this?No. That is the point of Blunami. It runs on a plain DC power pack with no command station at all — you control it from the free Blunami app over Bluetooth. It is also a fully NMRA-compliant DCC decoder if you already run DCC. Does the app work on Android?Yes. The free Blunami app is published for both iOS and Android. (Some older listings and dealer pages still say iOS only — that is out of date.) Is a speaker included?No. Pair it with an 8-ohm speaker rated 3 watt or better that fits your shell. Which prime movers do I get?All 9 listed above, selectable in the app or via CV 123. You are not locked to one engine sound — pick whichever matches your prototype. Will it fit my locomotive?This one measures 69 x 30.5 x 14mm and connects by screw terminal blocks (no soldering). Check the space in your shell against that footprint before ordering — other Blunami versions use different connectors and sizes.

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The SoundTraxx 885811 is a TSU-21PNEM8 Tsunami2 digital sound decoder with the ALCO sound set. Tsunami2 combines a 16-bit sound system, Hyperdrive2 motor control, Hyperlight lighting effects and a full NMRA-compliant DCC decoder on one board, driven by a 32-bit processor with 16 polyphonic sound channels. This version is the 21-pin MTC plug-in decoder, rated 1A and suited to HO scale and larger. Dynamic Digital Exhaust reads the load on the motor and notches the engine up and down on its own, so the locomotive sounds like it is working for its train. Features 9 ALCO prime movers: ALCO 539 Turbo, ALCO 539 Non-Turbo, ALCO 244 Turbo, ALCO 251A i6, ALCO 251C v12, ALCO 251C v12 Super Charged, ALCO 251C v12 Century Series, ALCO 251C v16, ALCO 251C v16 Super Charged Over 40 air horns and 13 bells, plus air compressors, couplers and dynamos Dynamic Digital Exhaust (DDE) matches exhaust volume and RPM to the load on the motor automatically Three braking types: independent, train and dynamic braking Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 8 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 885811 Model: TSU-21PNEM8 Tsunami2 Sound Set: ALCO Diesel Scale: HO scale and larger Decoder Size: 30.5 x 15.5 x 6.5mm Connection: 21-pin NEM (21MTC) plug Max. Motor Stall Current: 1A Function Outputs: 8 Audio Amplifier: 2 Watt, 8-Ohm Load DCC Track Voltage: 7V – 22V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other ALCO sound profile decoders. A speaker is not included — browse DCC speakers rated 2 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Will this fit my locomotive?It measures 30.5 x 15.5 x 6.5mm and connects by 21-pin nem (21mtc) plug. Check that against the space in your shell before ordering — other Tsunami2 versions use different connectors and sizes. Is a speaker included?No. Pair it with an 8-ohm speaker rated 2 watt or better that fits your shell. Which prime movers do I get?All 9 listed above, selectable via CV 123. You are not locked to one engine sound — pick whichever matches your prototype. Does it run on DC?Yes. Tsunami2 runs on a standard DC power pack as well as DCC, though sound and lighting options are limited on DC. Full function control needs a DCC system.

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The SoundTraxx 885007 is a TSU-2200 Tsunami2 digital sound decoder with the ALCO sound set. Tsunami2 combines a 16-bit sound system, Hyperdrive2 motor control, Hyperlight lighting effects and a full NMRA-compliant DCC decoder on one board, driven by a 32-bit processor with 16 polyphonic sound channels. This version is the universal-style decoder that fits most HO diesels, rated 2A and suited to HO to S scale. Dynamic Digital Exhaust reads the load on the motor and notches the engine up and down on its own, so the locomotive sounds like it is working for its train. Features 9 ALCO prime movers: ALCO 539 Turbo, ALCO 539 Non-Turbo, ALCO 244 Turbo, ALCO 251A i6, ALCO 251C v12, ALCO 251C v12 Super Charged, ALCO 251C v12 Century Series, ALCO 251C v16, ALCO 251C v16 Super Charged Over 40 air horns and 13 bells, plus air compressors, couplers and dynamos Dynamic Digital Exhaust (DDE) matches exhaust volume and RPM to the load on the motor automatically Three braking types: independent, train and dynamic braking Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 6 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 885007 Model: TSU-2200 Tsunami2 Sound Set: ALCO Diesel Scale: HO to S scale Decoder Size: 35 x 18 x 6mm Connection: Universal-style hardwire with an NMRA 9-pin JST harness Max. Motor Stall Current: 2A Function Outputs: 6 Audio Amplifier: 2 Watt, 8-Ohm Load DCC Track Voltage: 7V – 22V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other ALCO sound profile decoders. A speaker is not included — browse DCC speakers rated 2 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Will this fit my locomotive?It measures 35 x 18 x 6mm and connects by universal-style hardwire with an nmra 9-pin jst harness. Check that against the space in your shell before ordering — other Tsunami2 versions use different connectors and sizes. Is a speaker included?No. Pair it with an 8-ohm speaker rated 2 watt or better that fits your shell. Which prime movers do I get?All 9 listed above, selectable via CV 123. You are not locked to one engine sound — pick whichever matches your prototype. Does it run on DC?Yes. Tsunami2 runs on a standard DC power pack as well as DCC, though sound and lighting options are limited on DC. Full function control needs a DCC system.

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The SoundTraxx 884608 is a BLU-21PNEM8 Blunami digital sound decoder with the Steam-2 sound set. Blunami is a Tsunami2 with a Bluetooth radio added, so it runs three ways: as a normal DCC decoder on any NMRA-compliant system, on plain DC, or in wireless mode straight from your phone or tablet. Wireless mode needs no command station and no programming track — an old DC power pack and the free Blunami app are enough, and CVs can be read and changed over Bluetooth while the locomotive is running. The app is free for iOS and Android. This version is the 21-pin MTC plug-in Blunami, suited to HO scale and larger. Features 90 selectable whistles — the Steam-2 library carries 27 more than the standard Steam set, most of them roadname-specific — plus 12 bells, 10 airpumps and 8 dynamos Bluetooth control from the free Blunami app (iOS and Android) — over 300 settings without editing a single CV by hand Dynamic Digital Exhaust (DDE) automatically matches exhaust volume and RPM to the load on the motor, and the app calibrates it for you Independent and train brakes with adjustable rates Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 8 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 884608 Model: BLU-21PNEM8 Blunami Sound Set: Steam-2 Steam Scale: HO scale and larger Decoder Size: 30.5 x 15.5 x 6.5mm Connection: NEM660 21MTC integral connector Max. Motor Stall Current: 1A Function Outputs: 8 Audio Amplifier: 2 Watt, 8-Ohm Load Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Control Modes: DC, DCC and Bluetooth wireless Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other Steam-2 sound profile decoders. A speaker is not included — browse DCC speakers rated 2 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Do I need a DCC system to use this?No. That is the point of Blunami. It runs on a plain DC power pack with no command station at all — you control it from the free Blunami app over Bluetooth. It is also a fully NMRA-compliant DCC decoder if you already run DCC. Does the app work on Android?Yes. The free Blunami app is published for both iOS and Android. (Some older listings and dealer pages still say iOS only — that is out of date.) Is a speaker included?No. Pair it with an 8-ohm speaker rated 2 watt or better that fits your shell. How is Steam-2 different from the standard Steam set?The chuffs, bells, airpumps and dynamos are the same. The difference is the whistle library: Steam-2 offers 90 whistles versus 63 on the standard set, with many roadname-specific additions. Will it fit my locomotive?This one measures 30.5 x 15.5 x 6.5mm and connects by nem660 21mtc integral connector. Check the space in your shell against that footprint before ordering — other Blunami versions use different connectors and sizes.

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The TCS WOW501 is a universal 5-amp WOWSound decoder built for large-scale (O and G) locomotives, with Keep-Alive® on board for stutter-free running. Function outputs 5 and 6 can drive a coil-and-fan smoke unit, and setting CV58 to a value of 9 syncs the smoke to the chuff timing. This is the Steam version, delivering TCS's authentic steam sound set with synchronized chuff and a full suite of whistle, bell, and running effects. An on-board Keep-Alive® keeps it running smoothly across dirty track and dead frogs — no add-on capacitor needed. Pick a matching speaker from our DCC Accessories collection, browse more DCC Decoders, or shop the full Train Control Systems WOWSound lineup. Features CD-quality WOWSound — 16-bit audio at a 44.1 kHz sample rate. Authentic TCS's authentic steam sound set with synchronized chuff and a full suite of whistle, bell, and running effects. Back-EMF load compensation for superior slow-speed control under load. Quiet Drive super-quiet motor control for buzz-free running. Variable Momentum for custom acceleration and deceleration curves. Audio Assist® menu programming — set up sound and CVs right on the track, no computer required. Universal hard-wire decoder with a 5-amp output; F5/F6 can drive a coil-and-fan smoke unit. On-board Keep-Alive® for stutter-free operation over dirty track. More Information Brand Train Control Systems (TCS) Item Number 1600 Decoder WOW501 Type WOWSound DCC Sound Decoder Sound Steam Connection Universal hard-wire, 5 A output On-board Keep-Alive Yes Scale Large Scale (O / G) Condition New FAQ Will this decoder fit my locomotive?The WOW501 is built for large-scale (O and G) locomotives and is hard-wired; its 5-amp output handles the bigger motors found in large-scale models. Do I need a separate speaker?Yes — this is the decoder only. Add a WOWSpeaker (or any 8 Ω DCC speaker) sized for your locomotive to hear the sound. What is Audio Assist?It's TCS's on-the-fly programming menu that walks you through sound and CV setup using your throttle and the decoder's own spoken prompts — no programming track or computer needed.

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The SoundTraxx 885624 is a BLU-PNP8 Blunami digital sound decoder with the EMD-2 sound set. Blunami is a Tsunami2 with a Bluetooth radio added, so it runs three ways: as a normal DCC decoder on any NMRA-compliant system, on plain DC, or in wireless mode straight from your phone or tablet. Wireless mode needs no command station and no programming track — an old DC power pack and the free Blunami app are enough, and CVs can be read and changed over Bluetooth while the locomotive is running. The app is free for iOS and Android. This version is a drop-in replacement for the factory AT-style board in many HO diesels, suited to HO to S scale. Features 8 EMD-2 prime movers: EMD 567 12-cylinder (no transition), EMD 567C 16-cylinder non-turbo, EMD 645E 12-cylinder non-turbo, EMD 645E 12-cylinder turbo, EMD 645F 16-cylinder turbo, EMD 645E 20-cylinder turbo, EMD 710G 12-cylinder, EMD 710G 16-cylinder Over 40 air horns and 13 bells, plus air compressors, couplers and dynamos Bluetooth control from the free Blunami app (iOS and Android) — over 300 settings without editing a single CV by hand Dynamic Digital Exhaust (DDE) automatically matches exhaust volume and RPM to the load on the motor, and the app calibrates it for you Three braking types: independent, train and dynamic braking Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 8 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 885624 Model: BLU-PNP8 Blunami Sound Set: EMD-2 Diesel Scale: HO to S scale Decoder Size: 74 x 17 x 5mm Connection: Drop-in AT-style board replacement Max. Motor Stall Current: 2A Function Outputs: 8 Audio Amplifier: 2 Watt, 8-Ohm Load DCC Track Voltage: 7V – 22V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Control Modes: DC, DCC and Bluetooth wireless Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other EMD-2 sound profile decoders. A speaker is not included — browse DCC speakers rated 2 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Do I need a DCC system to use this?No. That is the point of Blunami. It runs on a plain DC power pack with no command station at all — you control it from the free Blunami app over Bluetooth. It is also a fully NMRA-compliant DCC decoder if you already run DCC. Does the app work on Android?Yes. The free Blunami app is published for both iOS and Android. (Some older listings and dealer pages still say iOS only — that is out of date.) Is a speaker included?No. Pair it with an 8-ohm speaker rated 2 watt or better that fits your shell. Which prime movers do I get?All 8 listed above, selectable in the app or via CV 123. You are not locked to one engine sound — pick whichever matches your prototype. EMD-2 or plain EMD — which do I want?This is the EMD-2 set: a second collection of less-common EMD prime movers, called out by cylinder count. The plain EMD set covers the more common 567/645/710 variants. Match the list above to your prototype. Will it fit my locomotive?This one measures 74 x 17 x 5mm and connects by drop-in at-style board replacement. Check the space in your shell against that footprint before ordering — other Blunami versions use different connectors and sizes.

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