SoundTraxx brings new dimensions in digital sound technology to your model railroad. Regardless of your scale or prototype, they have a sound system for you! They manufacture all of their Digital Sound Decoders in the USA, right here in Durango, Colorado. Their professional sound engineers record and edit their sound files and test their decoders multiple times before they ship to ensure top quality.
The SoundTraxx 852005 is the MC1H104P21 DCC mobile decoder — a motor and lighting decoder without sound, for HO scale locomotives. It is rated 1 amp and connects by 21-pin nmra connector, plugs into the factory pcb. As an MC1 series decoder it operates on DCC only — it needs a command station and will not run on a plain DC power pack. Motor control is SoundTraxx Hyperdrive. Features DCC operation — requires a DCC command station 14 Hyperlight lighting effects across 4 function outputs — Mars Light, Pyle National Gyralite, single and dual strobes, Western-Cullen D312 rotary beacon, Prime Stratolite, Type I and II ditch lights with grade-crossing logic, dimmable headlight, Dyno-Light and FRED Rule 17 or directional lighting control, grade-crossing timers, adjustable flash rate and LED brightness correction Hyperdrive motor control for smooth low-speed running NMRA DCC compliant, made in Durango, Colorado More Information Item Number: SoundTraxx 852005 Model: MC1H104P21 Type: Mobile decoder — motor and lighting, no sound Scale: HO scale Decoder Size: 25.1 x 15.6 x 4.7mm Connection: 21-pin NMRA connector, plugs into the factory PCB Max. Motor Stall Current: 1A Function Outputs: 4 (100mA each) Operating Modes: DCC only Max. Track Voltage: 21V max Motor Control: Hyperdrive Shop the full SoundTraxx range, compare every DCC decoder we stock, or find install parts in DCC wiring. Want engine sound as well? Look at the sound decoders instead — this one is motor and lights only. FAQ Does this make engine sound?No. Mobile decoders drive the motor and lights only. For sound, choose a Tsunami2, Blunami or Econami sound decoder. Will it run on my DC power pack?No. This is an MC1 series decoder and is DCC only — it needs a command station. If you need DC too, choose an MC2 series decoder such as the 852002 or 852003. What does the model number mean?MC1H104P21 breaks down as: MC1 series (DCC only), H for HO scale, 1 amp, 04 function outputs, and the connector type. Will it fit my locomotive?It measures 25.1 x 15.6 x 4.7mm and connects by 21-pin nmra connector, plugs into the factory pcb. Check that against your locomotive before ordering — the other MC decoders use different connectors and sizes.
$22.36
The SoundTraxx 885813 is a TSU-PNP8 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 a drop-in replacement for the factory board in many 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 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 885813 Model: TSU-PNP8 Tsunami2 Sound Set: EMD Diesel Scale: HO to S scale Decoder Size: 74 x 17 x 5mm Connection: Drop-in factory 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 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 74 x 17 x 5mm and connects by a drop-in factory board replacement. 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.
$98.36
The SoundTraxx 884006 is a TSU-1100 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 a compact universal-style decoder for tight installs, rated 1A and suited to small models with minimal space. 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 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 884006 Model: TSU-1100 Tsunami2 Sound Set: Steam-2 Steam Scale: small models with minimal space Decoder Size: 27 x 10.5 x 5mm Connection: Universal-style hardwire Max. Motor Stall Current: 1A 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 Steam-2 sound profile decoders. A speaker is not included — browse DCC speakers rated 1 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 27 x 10.5 x 5mm and connects by universal-style hardwire. 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 1 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.
$111.96
The SoundTraxx 810113 is the 35 x 16mm Oval 8-ohm Speaker. This small oval speaker is ideal for narrow hood diesels. Specifications Item Number: SoundTraxx 810113 Dimensions: 35 x 16 x 8mm(D) Frequency Response: 250Hz – 13kHz Power: 1 Watt (Nominal) 2 Watts (Peak) Impedance: 8 Ohms More Information Browse all DCC speakers and DCC wiring, shop the full SoundTraxx range, or pick a decoder from our DCC decoders.
$12.76
The SoundTraxx 810123 is the NMRA 8-pin Connector (set of 4). This set of four 8-pin connectors is designed to facilitate wiring in locomotives equipped with a DCC-ready socket. More Information Browse all DCC speakers and DCC wiring, shop the full SoundTraxx range, or pick a decoder from our DCC decoders.
$11.16
The SoundTraxx 852002 is the MC2H104AT DCC mobile decoder — a motor and lighting decoder without sound, for HO scale locomotives. It is rated 1 amp and connects by atlas light-board replacement (also fits some intermountain models). As an MC2 series decoder it runs on both DC and DCC, so it will work on a plain power pack as well as a command station, and it supports optional three-point speed curves via CVs 5 and 6. Motor control is SoundTraxx Hyperdrive. Features Runs on DC and DCC — a power pack or a command station 14 Hyperlight lighting effects across 4 function outputs — Mars Light, Pyle National Gyralite, single and dual strobes, Western-Cullen D312 rotary beacon, Prime Stratolite, Type I and II ditch lights with grade-crossing logic, dimmable headlight, Dyno-Light and FRED Rule 17 or directional lighting control, grade-crossing timers, adjustable flash rate and LED brightness correction Hyperdrive motor control for smooth low-speed running Three-point speed curves via CVs 5 and 6 NMRA DCC compliant, made in Durango, Colorado More Information Item Number: SoundTraxx 852002 Model: MC2H104AT Type: Mobile decoder — motor and lighting, no sound Scale: HO scale Decoder Size: 74 x 17 x 3mm Connection: Atlas light-board replacement (also fits some InterMountain models) Max. Motor Stall Current: 1A Function Outputs: 4 (100mA each) Operating Modes: DC and DCC Max. Track Voltage: 22V Motor Control: Hyperdrive Shop the full SoundTraxx range, compare every DCC decoder we stock, or find install parts in DCC wiring. Want engine sound as well? Look at the sound decoders instead — this one is motor and lights only. FAQ Does this make engine sound?No. Mobile decoders drive the motor and lights only. For sound, choose a Tsunami2, Blunami or Econami sound decoder. Will it run on my DC power pack?Yes. MC2 series decoders run on both DC and DCC. What does the model number mean?MC2H104AT breaks down as: MC2 series (DC and DCC), H for HO scale, 1 amp, 04 function outputs, and the connector type. Will it fit my locomotive?It measures 74 x 17 x 3mm and connects by atlas light-board replacement (also fits some intermountain models). Check that against your locomotive before ordering — the other MC decoders use different connectors and sizes.
$25.96 $22.99
The SoundTraxx 885809 is a TSU-21PNEM8 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 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 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 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 885809 Model: TSU-21PNEM8 Tsunami2 Sound Set: EMD 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 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 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. 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.
$98.36
The SoundTraxx 885824 is a TSU-PNP8 Tsunami2 digital sound decoder with the EMD-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 a drop-in replacement for the factory board in many 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 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 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 885824 Model: TSU-PNP8 Tsunami2 Sound Set: EMD-2 Diesel Scale: HO to S scale Decoder Size: 74 x 17 x 5mm Connection: Drop-in factory 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 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 Will this fit my locomotive?It measures 74 x 17 x 5mm and connects by a drop-in factory board replacement. 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 8 listed above, selectable 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: less-common EMD prime movers, named by cylinder count. The plain EMD set covers the more common 567/645/710 variants. 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.
$98.36
The SoundTraxx 810132 is the Locomotive-to-Tender Wiring Kit (DBX-9000). The SoundTraxx Locomotive-to-Tender Wiring Kit (DBX-9000) is a quick-disconnect wiring harness assembly for separating the locomotive from the tender. More Information Browse all DCC speakers and DCC wiring, shop the full SoundTraxx range, or pick a decoder from our DCC decoders.
$15.96
The SoundTraxx 885810 is a TSU-21PNEM8 Tsunami2 digital sound decoder with the GE 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 8 GE prime movers: GE FDL-12, GE FDL-16, GE 7FDL-16, GE Dual FDL-16, GE GEVO G12, GE 44-Ton Center Cab Dual Caterpillar, GE Cummins Switcher, GEVO G12 Tier 4 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 885810 Model: TSU-21PNEM8 Tsunami2 Sound Set: GE 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 GE 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 8 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.
$98.36
The SoundTraxx 810135 is the 9-pin JST to NMRA 8-pin Wiring Harness. The SoundTraxx 9-pin JST to NMRA 8-pin wiring harness easily converts TSU-2200 or ECO-200 Digital Sound Decoders to plug and play decoders for use with models equipped with an NMRA 8-pin socket. More Information Browse all DCC speakers and DCC wiring, shop the full SoundTraxx range, or pick a decoder from our DCC decoders.
$11.16
The SoundTraxx 885823 is a TSU-21PNEM8 Tsunami2 digital sound decoder with the EMD-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 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 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 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 885823 Model: TSU-21PNEM8 Tsunami2 Sound Set: EMD-2 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 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 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 8 listed above, selectable 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: less-common EMD prime movers, named by cylinder count. The plain EMD set covers the more common 567/645/710 variants. 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.
$98.36
