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ESU 56899 LokSound Micro V4.0 8-Pin Sound Decoder Alco



MSRP: $129.99


LokSound in Action
TDS Speakers & Enclosures

See ESU Loksound Decoder Guide for more information on 4.0 and Select decoders

  • This specific LokSound V4.0  is equipped with the 8-pin NEM652 plug.
  • The LokSound V4.0 decoder is the fourth generation LokSound decoder. You can install them in most N, HO, S  and O scale locomotives to control Motor, light and sound functions.


  • All LokSound V4.0 & Select decoders have 32 MBit Memory to save up to 276 seconds of original sounds.
  • Play up to 8 different sounds simultaneously using the 16-Bit mixer and the nearly noiseless D/A converter.
  • All LokSound V4.0 and Select decoders can use 4 and 8-ohm speakers


  • LokSound V4.0 decoders have four function outputs with a current of 250mA. These outputs can be assigned individually.
  • Two more non-amplified outputs have logic level. You can use those in combination with fitting adaptor PCBs (e.g. ESU 51968) to control more light or special physical functions.
  • Light functions have individual brightness adjustment.
  • Decoders can provide automatic coupling and decoupling for couplers by Roco®, Krois®, and Telex®

Stay Alive Cap

  • Simple to connect a PowerPack to the LokSound V4.0 and to all other Select, and Lokpilot decoders.
  • This energy storage device continues to supply the decoder with energy if the power is interrupted due to loss of contact or dirty rail.

Motor control

  • The decoder‘s load control is suitable for all common motors by Atlas, Bachmann, Athearn, Intermountain, Broadway Limited, Kato Walthers Proto, ROCO®, Fleischmann®, Brawa®, Mehano®, Bemo®, Märklin®, Faulhaber® or Maxon®.
  • You can adjust the control frequency with a basic frequency of 40kHz adaptively.
  • You can determine a limitation of the load control‘s influence with the Dynamic Drive Control (DDC) to control station or switch areas.
  • SoftDrive® Sinus motors, which are often used on Märklin® locos can also be controlled by the LokSound V4.0 decoders.
  • The new serial communication protocol provides from now on the operation on Trix®-locos.

Operation Modes 
The LokSound V4.0 recognizes DCC, Selectrix®, and the Motorola® protocol. It can be operated with 14, 28 or 128 drive steps or on analog DC layouts in DCC mode. You can assign the decoders to 2-digit, 3-digit (1-127) or 4-digit (1-9999) addresses as well as a consist address.

  • The Motorola®-protocol provides the operation of the LokSound V4.0 decoders with Märklin® control stations 6020®, 6021®, delta®, mobile station® and central station®. The decoders can be used with the addresses 01 – 255 on this mode. A second address provides the possibility to use the function keys F5 to F8.
  • The Selectrix® protocol provides the possibility to use LokSound V4.0 decoders with this also established system. All established DCC brake systems like the well-known Lenz LG100, but also the new Lenz® ABC brake units with asymmetrical DCC signal are recognized as well as the braking on DC (with switched polarity) or on Selectrix® diode brake systems. You can also use the well-known Märklin® brake system in DCC-mode.
  • Of course, our top decoder is able to determine a constant braking distance, so that your locos stop in front of the red signal, no matter what speed your loco is at.
  • LokSound V4.0 decoders are also able to operate on analog DC and AC layouts.
  • The decoders can switch automatically between all modes (AC, Motorola®, DC, DCC, Selectrix®) during operation. This is important if some parts of your layout work with analog control (e.g. fiddle yards).


  • A very important function of the LokSound V4.0 decoder is the integrated RailComPlus® function.
  • Your locos will be recognized automatically by an appropriate digital command station such as the ESU ECoS 50210

Future built-in

You can update the firmware of all LokSound v4.0 and Select decoders. This means the internal software on the decoder‘s memory can be replaced by new versions if necessary. You‘ll simply need the ESU LokProgrammer and a PC.

Don’t Forget Your Superior Quality TDS Speakers!


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