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MRC 0001960 N Scale Drop In Sound Decoder for Kato SD70MAC & AC4400


MSRP: $109.98


MRC N Sound Decoder for Kato SD70MAC & AC4400 (16-bit)

Item Number: 0001960

This MRC N-gauge dual mode Drop-In provides the easy installation of a one piece sound decoder/speaker combination that replaces the factory installed printed circuit board for Kato SD70MAC and AC4400, by simply removing the factory pc board and dropping in the 1644 decoder.

MRC’s “Brilliance™” sound, miniaturized to a single drop-in decoder with board mounted super-fidelity speaker, is virtually “plug ‘n play”. Just imagine… all 28 NMRA available functions, and your choices of multiple bells & numerous horns to give “life” to your DCC N-Scale loco’s.

We haven’t forgotten power pack users! MRC’s 1644 decoder is a dual-mode decoder so DC railroaders can get brilliantly synchronized diesel rumble sounds on their layout as well.

Decoder only – locomotives not included

*Note: interior of the body shell must be modified to accommodate the height of this decoder


  • Two selectable, authentic 8 notch diesel prime mover sounds
  • Lifelike, randomly associated locomotive sounds
  • 16 user selectable different horns and 8 bells
  • 28 accessory functions allowing more ound control than ever
  • Programmable individual sound volumes
  • 1.0 amp capacity
  • Programmable for either 2-digit (1-127) or 4-digit (1-9999) addresses
  • Programmable start voltage
  • Programmable acceleration rate
  • Programmable deceleration rate
  • Programmable top voltage
  • Programmable 14, 28, 128 speed steps
  • Selectable factory default speed curve
  • Supports advanced consisting (CV19)
  • Supports programming on the main (OPS mode)
  • Compatible with NMRA DCC standards
  • Complies with Part 15 of FCC regulations
  • 10mm, 32 ohm speaker included
  • PCB size: 79mm x 9.8mm x 6.7mm
  • Directly replaces Kato SD70MAC and AC4400 PC Boards



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