SoundTraxx: Premium Model Train Sound Systems

SoundTraxx: Premium Model Train Sound Systems - Squeaky's Trains

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.

140 products

  • SoundTraxx 852002 | DCC Mobile Decoder MC2H104AT | HO Scale - Squeaky's Trains

    SoundTraxx SoundTraxx 852002 | DCC Mobile Decoder MC2H104AT | HO Scale

    2 reviews

    5 in stock

    HO-scale, 4-function decoder that measures 74 x 17 x 3mm designed to replace the existing manufacturer light board in Atlas HO diesel models, some InterMountain Railway models, and those using a similar physical design. This decoder will operate in both DC and DCC. Dimensions: 74 x 17 x 3mm Max. Motor Stall Current: 1A Max. Function Current: 100mA (each output) Function Outputs: 4 DCC Track Voltage: 21 Volts Maximum

    5 in stock

    $23.16

  • SoundTraxx 810110 | 28mm Speaker Baffle Kit - Squeaky's Trains

    SoundTraxx SoundTraxx 810110 | 28mm Speaker Baffle Kit

    2 in stock

    This snap-together baffle kit is designed for use with SoundTraxx’s 28mm round speakers (P.N. STX810054 or STX810153).

    2 in stock

    $6.36

  • SoundTraxx 810112 | 25 x 14mm Oval 8-ohm Speaker - Squeaky's Trains

    SoundTraxx SoundTraxx 810112 | 25 x 14mm Oval 8-ohm Speaker

    2 reviews

    1 in stock

    This small speaker is perfect for narrow hood diesels and anywhere else where space is at a premium. Dimensions: 25 x 14 x 5.2mm(D)Frequency Response: 300Hz – 20kHzPeak Power: 1.5 WattsImpedance: 8 Ohms

    1 in stock

    $12.76

  • SoundTraxx 885032 | Tsunami2 TSU-KN1 Digital Sound Decoder | N Scale - Squeaky's Trains SoundTraxx 885032 | Tsunami2 TSU-KN1 Digital Sound Decoder | N Scale - Squeaky's Trains

    SoundTraxx SoundTraxx 885032 | Tsunami2 TSU-KN1 Digital Sound Decoder | N Scale

    2 reviews

    2 in stock

    Tsunami2 meets N-Scale! The TSU-KN1 is our first plug and play Tsunami2 N-Scale decoder. Finally, you can get the Tsunami2 features you have been wanting in your N-Scale locomotives! We are excited to introduce a Plug and Play Tsunami2, N-Scale decoder and installation kit. The new TSU-KN1 is designed to fit into Kato N-Scale E, F-units, F40PH, PA and P42 locomotives. Get an easy install and the amazingly realistic sounds plus the features that all Tsunami2 decoders have to offer.   The TSU-KN1 comes with a complete installation kit ensuring an easy install. Also note that the TSU-KN1 is designed with 4 LED friendly function outputs making external resistors unnecessary! Installation kit includes: TSU-KN1 Decoder Mini Cube 3 Speaker and Baffle  Speaker Wire  Kapton Tape 2 Sunny White LEDs  Product Specifications: Dimensions: 55 x 13.8 x 3.2mm Max. Motor Stall Current: 500mA Max. Function Current: 100mA (each output) Function Outputs: 4 (LED Friendly. No resistors necessary) Audio Amplifier: 1 Watt, 8-Ohm Load DCC Track Voltage: 7.5V – 22V Sound Channels: 16 Tsunami2 Digital Sound Decoders integrate a full-featured sound system, Hyperlight™ lighting effects, Hyperdrive2™ advanced motor control, and a DCC decoder into a single package. Tsunami2 Digital Sound Decoders offer 20+ lighting effects in each model! Other popular Tsunami2 features include: Reactive Dynamic Digital Exhaust, Functioning locomotive and train brakes. We also offer a large selection of selectable sound effects including: 8 manufacturer specific prime movers, bells (12), airhorns (40+), couplers, compressors, and more!

    2 in stock

    $127.96

  • SoundTraxx 810155 | Mini Cube 2 Oval Speaker/Baffle - Squeaky's Trains SoundTraxx 810155 | Mini Cube 2 Oval Speaker/Baffle - Squeaky's Trains

    SoundTraxx SoundTraxx 810155 | Mini Cube 2 Oval Speaker/Baffle

    1 review

    8 in stock

    SoundTraxx’s tiniest speaker comes with a properly proportioned speaker enclosure and provides remarkable volume for tiny models! Dimensions: 13 x 9 x 9.4mm(D)Frequency Response: 100Hz – 10kHzPower: 40mW (Nominal) 75mW (Peak)Impedance: 32 Ohms Note: When using this speaker with a decoder that has a 1-2 Watt, 8 Ohm  amplifier; it must be wired in parallel with another 32 Ohm speaker to create a 16 Ohm load for the amplifier.

    8 in stock

    $13.15

  • SoundTraxx 852004 | DCC Mobile Universal Decoder (1-amp) MC2H104P9 - Squeaky's Trains

    SoundTraxx SoundTraxx 852004 | DCC Mobile Universal Decoder (1-amp) MC2H104P9

    4 in stock

    HO-scale, 4-function decoder that measures 25 x 16 x 6mm with a 9-pin ‘universal’ JST wiring harness that is mostly used in older pre-DCC or brass models. This decoder will operate in both DC and DCC. Product Specifications: Dimensions: 25 x 16 x 6mmMax. Motor Stall Current: 1AMax. Function Current: 100mA (each output)Function Outputs: 4DCC Track Voltage: 21 Volts Maximum

    4 in stock

    $26.36

  • SoundTraxx 885022 | TSU-2200 Tsunami2 (2-amp) EMD-2 Diesel Sound Decoder | HO Scale - Squeaky's Trains SoundTraxx 885022 | TSU-2200 Tsunami2 (2-amp) EMD-2 Diesel Sound Decoder | HO Scale - Squeaky's Trains

    SoundTraxx SoundTraxx 885022 | TSU-2200 Tsunami2 (2-amp) EMD-2 Diesel Sound Decoder | HO Scale

    4 in stock

    The TSU-2200 is a versatile Digital Sound Decoder that is suitable for a wide variety of models from HO to S scale. You will feel like you are in the cab with the amazing new features that Tsunami2 has to offer including: Reactive Dynamic Digital Exhaust, Functioning locomotive and train brakes, injectors, power reverse, and firebox flicker. We also offer a large selection of selectable sound effects including: exhaust chuffs (10), prime movers (up to 12), bells (12), Whistles (90), airhorns (40+), couplers, dynamos and more! This 2-amp, universal-style format, and includes a connector to easily add a CurrentKeeper (P.N. 810140) to maintain performance over dirty track and switches. Product Specifications: Sound Profile: EMD-2 Diesel Dimensions: 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 – 22V Sound Channels: 16

    4 in stock

    $107.16

  • SoundTraxx 885824 | TSU-PNP8 8 Function – Tsunami2 (2-amp) EMD-2 Diesel Sound Decoder - Squeaky's Trains SoundTraxx 885824 | TSU-PNP8 8 Function – Tsunami2 (2-amp) EMD-2 Diesel Sound Decoder - Squeaky's Trains

    SoundTraxx SoundTraxx 885824 | TSU-PNP8 8 Function – Tsunami2 (2-amp) EMD-2 Diesel Sound Decoder

    4 in stock

    The TSU-PNP8 is a universal factory board replacement sound decoder suitable for use in many manufacturer’s diesel models such as those made by Atlas, Athearn, and InterMountain Models. It is suitable for a wide variety of models from HO to S scale. You will feel like you are in the cab with the amazing new features that Tsunami2 has to offer including: Reactive Dynamic Digital Exhaust, Functioning locomotive brakes, and train brakes. We also offer a large selection of selectable sound effects including: prime movers (up to 12), bells (12), airhorns (40+) and more! This decoder includes a connector to easily add a CurrentKeeper (P.N. 810140) to maintain performance over dirty track and switches. Product Specifications: Sound Profile: EMD-2 Diesel Dimensions: 74 x 17 x 5mm Max. Motor Stall Current: 2A Max. Function Current: 100mA (each output) Function Outputs: 8 Audio Amplifier: 2 Watt, 8-Ohm Load DCC Track Voltage: 7.5V – 22V Sound Channels: 16

    4 in stock

    $98.36

  • SoundTraxx 829100 | Tsunami SoundCar Digital Sound Decoder - Squeaky's Trains SoundTraxx 829100 | Tsunami SoundCar Digital Sound Decoder - Squeaky's Trains

    SoundTraxx SoundTraxx 829100 | Tsunami SoundCar Digital Sound Decoder

    1 review

    3 in stock

    Your train is no longer limited to locomotive sounds! This 16-bit, universal-style Digital Sound Decoder is the only DCC decoder to replicate railcar sounds and lighting effects. It includes selections for livestock sounds, airhorns, whistles, bells, and interior and exterior lighting effects for passenger cars, cab cars, and cabooses. Product Specifications: Dimensions: 48 x 13.5 x 9mmFunction Outputs: 4Max Function Current: 100mA (each output)Audio Amplifier: 1W, 8 Ohm loadMax Track Voltage: 27VSound Channels: 8 It is important to choose a capable speaker to use with these decoders. Below you will find a list of speakers that are compatible with the Tsunami SoundCar Digital Sound Decoder. 810053 20mm Round Speaker 810054 28mm Round Speaker 810089 15mm Round Speaker 810114 30mm Round Speaker  810153 28mm Round Speaker 810078 40 x 28.5mm Oval Speaker  810103 40 x 20mm Oval Speaker 810112 25 x 14mm Oval Speaker  810113 35 x 16mm Oval Speaker 810115 35 x 20mm Oval Speaker  810154 15 x 12 x 11.5mm Mini Cube 810155 *13 x 9 x 8.5mm Mini Cube2  810129 23mm Square Mega Bass Speaker 810130 27mm Round Mega Bass Speaker  810131 28mm Square Mega Bass Speaker * Note: When wiring multiple Mini Cube 2 speakers, P.N. 810155, use parallel format to decrease impedance and increase overall volume.

    3 in stock

    $51.16

  • SoundTraxx 810159 | JST-21PNEM Adapter - Squeaky's Trains

    SoundTraxx SoundTraxx 810159 | JST-21PNEM Adapter

    5 in stock

    Easily adapt any SoundTraxx 21PNEM decoder to an NMRA 9-Pin DCC “quick plug” equipped model. This adapter can also be used with SoundTraxx 9-Pin JST power harness (STX810069) to create a universal-style decoder. Dimensions: 22.5 x 16 x 7.5mm Support for up to 8 functions Solder Pads for CurrentKeeper, speaker connections and extra lights

    5 in stock

    $13.56

  • SoundTraxx 885005 | TSU-2200 – Tsunami2 (2-amp) EMD Diesel Sound Decoder | HO Scale - Squeaky's Trains SoundTraxx 885005 | TSU-2200 – Tsunami2 (2-amp) EMD Diesel Sound Decoder | HO Scale - Squeaky's Trains

    SoundTraxx SoundTraxx 885005 | TSU-2200 – Tsunami2 (2-amp) EMD Diesel Sound Decoder | HO Scale

    2 reviews

    2 in stock

    The TSU-2200 is a versatile Digital Sound Decoder that is suitable for a wide variety of models from HO to S scale. You will feel like you are in the cab with the amazing new features that Tsunami2 has to offer including: Reactive Dynamic Digital Exhaust, Functioning locomotive and train brakes, injectors, power reverse, and firebox flicker. We also offer a large selection of selectable sound effects including: exhaust chuffs (10), prime movers (up to 12), bells (12), Whistles (90), airhorns (40+), couplers, dynamos and more! This 2-amp, universal-style format, and includes a connector to easily add a CurrentKeeper (P.N. 810140) to maintain performance over dirty track and switches. Product Specifications: Sound Profile: EMD Diesel Dimensions: 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 – 22V Sound Channels: 16

    2 in stock

    $107.16

  • SoundTraxx 885809 | TSU-21PNEM8 Tsunami2 (1-amp) EMD Diesel Sound Decoder - Squeaky's Trains SoundTraxx 885809 | TSU-21PNEM8 Tsunami2 (1-amp) EMD Diesel Sound Decoder - Squeaky's Trains

    SoundTraxx SoundTraxx 885809 | TSU-21PNEM8 Tsunami2 (1-amp) EMD Diesel Sound Decoder

    1 review

    4 in stock

    The TSU-21PNEM8 is a 1-amp Digital Sound Decoder with 8 function outputs. It is designed for easy plug-in operation when mated to a 21-pin NEM connector. You will feel like you are in the cab with the amazing new features that Tsunami2 has to offer including: Reactive Dynamic Digital Exhaust, Functioning locomotive and train brakes, injectors, power reverse, and firebox flicker. They also offer a large selection of selectable sound effects including: exhaust chuffs(10), prime movers (up to 12), bells (12), Whistles (90), airhorns (40+), couplers, dynamos and more! The TSU-21PNEM8 can be wired to a CurrentKeeper (P.N. 810140) to maintain performance over dirty track and switches. Product Specifications: Sound Profile: EMD Diesel Dimensions: 30.5 x 15.5 x 6.5mm Max. Motor Stall Current: 1A Max. Function Current: 100mA (each output) Function Outputs: 8 Audio Amplifier: 2 Watt, 8-Ohm Load DCC Track Voltage: 7.5V – 22V Sound Channels: 16

    4 in stock

    $98.36

© 2025 Squeaky's Trains & Things, Powered by Shopify

    • Amazon
    • American Express
    • Apple Pay
    • Diners Club
    • Discover
    • Google Pay
    • Mastercard
    • PayPal
    • Shop Pay
    • Venmo
    • Visa

    Login

    Forgot your password?

    Don't have an account yet?
    Create account