ESU 73100 LokSound Select Direct Micro sound decoder, generic sound


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Working with Narrow Hood units in N scale? The NEW 6 output function LokSound Select Direct Micro decoder was designed with this purpose in mind!

The LokSound Select is a versatile DCC & DC “Dual Mode” decoder integrating a full-featured, 8 channel sound system, and a .75A motor controller. The NEW LokSound Select Direct Micro only measures 2.60 inch long x .32 inch wide by only .18 tall (66mm x 8.2mm x 4.5mm) making it the world´s narrowest LokSound decoder! And, one of the only 6 function output Micro Sound decoders on the market!

We ship the LokSound Select Direct Micro in 2 form factors. A Retail version which will drop into many pre-2016 Atlas and InterMountain Locos, (and others with minor modification) and an OEM version which is made as an upgrade to DC Locos that came from the factory with ESU Sound. This allows flexible installation in your favorite N scale models. Due to its unique thermal design, it (like all genuine LokSound decoders) does not need any heat sinks.

For LokSound Select decoders, we offer a comprehensive range of new high-power speakers. This includes our 50321 11mm x15mm cell phone type speakers!

Operational modes

The LokSound Select can be used on conventional “analog” layouts and controlled with a DC power pack, but to benefit from all its features, we highly recommend DCC operation.

The LokSound Select follows all NMRA DCC standards and recommended practices. It can be used with 14, 28 or 128 speed steps, supports two digit (7 bit addresses) as well as “4-digit” addressing. Up to 29 function keys are supported. The LokSound Select can change between DC and DCC operation at any time “on the fly”.

Of course, the LokSound Select supports all DCC-programming modes including Programming on the Main Track (“POM”). Because of its unique low-power design, the LokSound Select can be programmed on the programming track of all popular DCC systems. No programming track boosters or other circuitry will be needed.

By the use of our LokSound Programmer, programming can be even more comfortable by using your computer to adjust the many CVs and settings.


The LokSound Select comes with a 32 MBit memory chip. The sounds stored therein are our own recordings which were made by using the latest recording equipment and have been digitally re-mastered for the best audio possible. The sounds are transferred to a class “D” audio amplifier via eight polyphonic sound channels. LokSound Select decoders offer the following unique features:

  • Multiple whistle and horns: Each LokSound Select offers many whistle & horns. By just changing one CV, you can select your favorite one. This allows an easier adjustment to your model.
  • Playable horn: The LokSound Select supports a very fast responding horn function. By just pressing your throttle‘s button, you can really blow the whistle like the real engineer.
  • 8 channel sound: The LokSound Select can playback up to 8 sounds at the same time. This will result in the most realistic experience available today.
  • Synchronized brake squeal: The LokSound Select will synchronize the brake squeal sound with the real movement of the locomotive. No longer will stopped trains have the brake sound still on!
  • “Full Throttle Features”: The diesel speed steps can be either manually controlled by function keys or automatically based on the speed.
  • Individual volume control: The volume of all sound effects can be adjusted individually.

Diesel decoders can produce over 20 sound effects, including the engine start-up and shutdown, prime mover sounds through all eight notches, bell, air horn, air compressor, dynamic brakes, fans, brake squeals, coupling and uncoupling, detector sounds, rail clank and many more.

Customize your sounds

Unlike other manufacturers, LokSound Select offers you two options to customize your engine. The most simple is by using one (!) CV. You can select the prime mover sound, the desired whistle or horn and the bell. Each LokSound Select offers various options on that.

However, if you are still unsatisfied with the result, you may at any time use the famous LokSound Programmer to download new sounds into the LokSound Select. We offer numerous “ready-made” sound packages for easy downloading.

Superior motor control

ESU offers load compensation (using B-EMF) since 1999. While other manufacturers seem only to focus on the sound options, the LokSound Select offers the 5th generation of motor control resulting in a smooth and precise locomotive operation. We at ESU believe that good motor control is mandatory for model trains: Even the best sound is worthless if the locomotive running is not smooth!

Regardless if you are using coreless or conventional DC motors, the LokSound Select’s unique auto-detection function can measure the characteristics and adjust the internal settings. There is no need to fiddle around with many CVs to adjust to the engine. Due to Dynamic Drive Control (DDC) you can limit the influence of the load control and operate really smoothly around the depot and over turnouts, while on the main, when going uphill the engine prototypically slows down.

Shining lighting effects

LokSound Select Direct Micro decoders have 6 function outputs with the possibility of using constant current of 50mA each. These outputs can be assigned individually. All important light functions like Flashing ditchlights, Gyrolight, Mars light, and so on are provided including an individual adjustment of brightness for each function. Besides D312 Rotary beacon, strobe and alternate flashing, Mars light, Gyralight, Ditch lights (two types), Oscillating Headlights, Stratolight and many more.

The Rule 17 dimmable headlight can be either controlled automatically or by function button. A LED mode brightness correction feature now also allows using LEDs for lighting effects. This is an important feature since LEDs do behave different than bulbs. (Pulse Width Modulation)


All function outputs and the motor connection are protected against overload and short-circuit. We want you to enjoy your LokSound decoder as long as possible.

Built-in Futures

LokSound Select decoders are firmware-updatable. This means, the internal decoder software can be replaced by new versions, if necessary. For this, you only need an ESU LokSound Programmer and a PC.


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