{"title":"Soundtraxx Blunami 21 Pin Sound Decoders BLU-21PNEM8","description":"\u003cp\u003eBring enhanced audio to your model railroad with \u003cstrong\u003eSoundTraxx Blunami 21-pin sound decoders (BLU-21PNEM8)\u003c\/strong\u003e, available now at TrainSupply. These standard NMRA 21-pin boards deliver rich locomotive sound effects including horns, bells, engines, and auxiliary functions — all in a compact format that’s easy to install in compatible shells.\u003c\/p\u003e\n\u003cp\u003eBlunami decoders offer powerful audio performance and flexible function outputs, and can be used with the Blunami app for wireless control in supported setups. This combination makes them ideal for hobbyists upgrading locomotive sound with modern features and high-quality audio.\u003c\/p\u003e\n\u003ch2\u003eExplore More Blunami Decoder Families\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/trainsupply.com\/collections\/soundtraxx-blunami-digital-sound-decoders\"\u003eBlunami Digital Sound Decoders\u003c\/a\u003e – Full family of Blunami sound boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/trainsupply.com\/collections\/soundtraxx-blunami-sound-decoders-blu-2200\"\u003eBlunami 2200 Series Sound Decoders\u003c\/a\u003e – Rich audio boards with advanced effects.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/trainsupply.com\/collections\/soundtraxx-blunami-sound-decoders-blu-4408\"\u003eBlunami 4408 Series Sound Decoders\u003c\/a\u003e – More function options and expanded performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/trainsupply.com\/collections\/soundtraxx-blunami-pnp-8-board-replacement-sound-decoders-blu-pnp8\"\u003eBlunami PNP-8 Board Replacement Decoders\u003c\/a\u003e – Easy plug-and-play options.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/trainsupply.com\/collections\/soundtraxx-blunami-sound-decoders-blu-1101\"\u003eBlunami 1101 Series Sound Decoders\u003c\/a\u003e – Compact boards for tight installs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePair With Speakers \u0026amp; Audio Accessories\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/trainsupply.com\/collections\/soundtraxx-speakers\"\u003eSoundTraxx Speakers\u003c\/a\u003e – Quality drivers for clear audio.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/trainsupply.com\/collections\/soundtraxx-speaker-gaskets\"\u003eSpeaker Gaskets\u003c\/a\u003e – Improve acoustic seal and reduce vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/trainsupply.com\/collections\/soundtraxx-speaker-baffles-and-gaskets\"\u003eSpeaker Baffles \u0026amp; Gaskets\u003c\/a\u003e – Enhance enclosure performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Wiring Support\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/trainsupply.com\/collections\/soundtraxx-installation\"\u003eInstallation Products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/trainsupply.com\/collections\/soundtraxx-wiring-aids\"\u003eWiring Aids\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/trainsupply.com\/collections\/soundtraxx-decoder-wire\"\u003eDecoder Wire\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy TrainSupply Blunami 21-Pin Decoders\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 21-pin interface\u003c\/strong\u003e for broad compatibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRich sound effects\u003c\/strong\u003e with flexible control outputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless support\u003c\/strong\u003e with Blunami app connectivity (when applicable).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn-stock \u0026amp; ready to ship\u003c\/strong\u003e with fast delivery options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse the \u003cstrong\u003eSoundTraxx Blunami 21-pin sound decoders (BLU-21PNEM8)\u003c\/strong\u003e collection to find the right board for your locomotive upgrade. Pair with speakers and install accessories for a complete audio setup that enhances your layout’s realism and performance.\u003c\/p\u003e","products":[{"product_id":"tsu885610","title":"Soundtraxx Blunami BLU-21PNEM8 21 Pin Diesel GE 8-Function - 885610","description":"\u003cp\u003e\u003cspan\u003eOur Blunami decoders will change the way you enjoy the model railroading hobby. They operate in DC, DCC, or wireless mode with the free Blunami App.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThe Blunami BLU-21PNEM8\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003eThe BLU-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 Blunami 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!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed Help Choosing a Sound Profile?\u003c\/strong\u003e\u003cbr\u003eWe have tons of sounds to match a wide range of locomotives. So many, in fact, we cannot fit them all on one decoder. Therefore, they are broken up into sound profiles of like sounds (Steam, EMD, GE, Electric, etc.). If you don't know which sound profile you need, the best place to start is the Sound Selection References. These will list all the prime movers or exhaust chuffs available on each sound profile. If you need further assistance explore these links: \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDecoder Selector: Tells you which board format and part number you need for specific models.\u003c\/li\u003e\n\u003cli\u003eSound Samples: Hear our sounds in action!\u003c\/li\u003e\n\u003cli\u003eChoosing the Right Sound System: If you are new to SoundTraxx, model railroading, or are unfamiliar with our products.\u003c\/li\u003e\n\u003cli\u003eSound Selection References: There are several for each decoder and they can be found below or in the Manuals section of our website.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDYNAMIC DIGITAL EXHAUST \u003cbr\u003e\u003c\/strong\u003eFor added realism, you’ll love our reactive Dynamic Digital Exhaust (DDE) feature. When your locomotive is traveling across flat terrain and simply maintaining speed, you will hear your locomotive chugging along. But, when the locomotive encounters a grade and the engineer applies more throttle to get the train up the hill, the engine sounds will automatically react and reflect the increase of power needed to crest the hill. DDE accomplishes this by calculating the changes in strain or load on the motor and adjusting the exhaust to appropriately simulate the work the engineer would be doing to the throttle of the engine. This gives Tsunami2 the ability to create\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ethe most realistic experience possible.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cstrong\u003eHIGH QUALITY SOUND LIBRARY\u003cbr\u003e\u003c\/strong\u003eOur large selection of high-quality sound effects include: \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e10 Exhaust Chuffs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUp to 12 Prime Movers in each sound profile \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUp to 12 Bells \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e90 Whistles\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e40+ Airhorns\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdditional couplers, dynamos, cab chatter and more!\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eADDED REALISM\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003eAdditional realism can be simulated by adding functioning locomotive and train brakes, injectors, power reverse, firebox flicker, and more.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eEASY INSTALLATION\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003eThe BLU-21PNEM8 simply plugs into models equipped with a 21-pin NEM connector. \u003c\/p\u003e\n\u003cp\u003eThe BLU-21PNEM8 can be wired to a CurrentKeeper (P.N.\u003cspan\u003e \u003c\/span\u003e810140\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e810160) to maintain performance over dirty track and switches.\u003c\/p\u003e\n\u003ctable cellpadding=\"6\" cellspacing=\"0\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd width=\"60%\"\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"40%\"\u003e30.5 x 15.5 x 6.5mm \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Motor Stall Current:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Function Current:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100mA (each output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction Outputs:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Amplifier:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 Watt, 8-Ohm Load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cstrong\u003eDCC Track Voltage:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7V – 22V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cstrong\u003eSound Channels:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Soundtraxx","offers":[{"title":"Default Title","offer_id":50619752644894,"sku":"TSU885610","price":135.96,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0904\/6789\/3534\/files\/soundtraxx-blunami-blu-21pnem8-diesel-ge-8-function-7381105.jpg?v=1771351827"},{"product_id":"tsu885609","title":"Soundtraxx Blunami BLU-21PNEM8 21 Pin Diesel EMD 8-Function - 885609","description":"\u003cp\u003e\u003cspan\u003eOur Blunami decoders will change the way you enjoy the model railroading hobby. They operate in DC, DCC, or wireless mode with the free Blunami App.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThe Blunami BLU-21PNEM8\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003eThe BLU-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 Blunami 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!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed Help Choosing a Sound Profile?\u003c\/strong\u003e\u003cbr\u003eWe have tons of sounds to match a wide range of locomotives. So many, in fact, we cannot fit them all on one decoder. Therefore, they are broken up into sound profiles of like sounds (Steam, EMD, GE, Electric, etc.). If you don't know which sound profile you need, the best place to start is the Sound Selection References. These will list all the prime movers or exhaust chuffs available on each sound profile. If you need further assistance explore these links: \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDecoder Selector: Tells you which board format and part number you need for specific models.\u003c\/li\u003e\n\u003cli\u003eSound Samples: Hear our sounds in action!\u003c\/li\u003e\n\u003cli\u003eChoosing the Right Sound System: If you are new to SoundTraxx, model railroading, or are unfamiliar with our products.\u003c\/li\u003e\n\u003cli\u003eSound Selection References: There are several for each decoder and they can be found below or in the Manuals section of our website.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDYNAMIC DIGITAL EXHAUST \u003cbr\u003e\u003c\/strong\u003eFor added realism, you’ll love our reactive Dynamic Digital Exhaust (DDE) feature. When your locomotive is traveling across flat terrain and simply maintaining speed, you will hear your locomotive chugging along. But, when the locomotive encounters a grade and the engineer applies more throttle to get the train up the hill, the engine sounds will automatically react and reflect the increase of power needed to crest the hill. DDE accomplishes this by calculating the changes in strain or load on the motor and adjusting the exhaust to appropriately simulate the work the engineer would be doing to the throttle of the engine. This gives Tsunami2 the ability to create\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ethe most realistic experience possible.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cstrong\u003eHIGH QUALITY SOUND LIBRARY\u003cbr\u003e\u003c\/strong\u003eOur large selection of high-quality sound effects include: \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e10 Exhaust Chuffs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUp to 12 Prime Movers in each sound profile \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUp to 12 Bells \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e90 Whistles\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e40+ Airhorns\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdditional couplers, dynamos, cab chatter and more!\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eADDED REALISM\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003cbr\u003eAdditional realism can be simulated by adding functioning locomotive and train brakes, injectors, power reverse, firebox flicker, and more.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eEASY INSTALLATION\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003eThe BLU-21PNEM8 simply plugs into models equipped with a 21-pin NEM connector. \u003c\/p\u003e\n\u003cp\u003eThe BLU-21PNEM8 can be wired to a CurrentKeeper (P.N.\u003cspan\u003e \u003c\/span\u003e810140\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e810160) to maintain performance over dirty track and switches.\u003c\/p\u003e\n\u003ctable border=\"0\" cellspacing=\"0\" cellpadding=\"6\"\u003e\n\u003ctbody\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd width=\"60%\"\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"40%\"\u003e30.5 x 15.5 x 6.5mm \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Motor Stall Current:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Function Current:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100mA (each output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction Outputs:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Amplifier:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 Watt, 8-Ohm Load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cstrong\u003eDCC Track Voltage:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7V – 22V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr valign=\"top\"\u003e\n\u003ctd\u003e\u003cstrong\u003eSound Channels:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Soundtraxx","offers":[{"title":"Default Title","offer_id":50619752677662,"sku":"TSU885609","price":135.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0904\/6789\/3534\/files\/soundtraxx-blunami-blu-21pnem8-diesel-emd-8-function-8403929.jpg?v=1771351830"}],"url":"https:\/\/trainsupply.com\/collections\/soundtraxx-blunami-21-pin-sound-decoders-blu-21pnem8.oembed","provider":"Train Supply","version":"1.0","type":"link"}