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TRAIN CONTROLS
 

     

        DCC Decoders


MRC Decoders… Technology Perfected

Experience realistic sounds you never imagined… like diesel motor roar that changes pitch in synch with your locomotives speed, dynamic braking that slows the loco and activates realistic sounds at the same time. Experience the clanking of real coupling, steam injectors, squealing wheel flanges, horns blaring at grade crossings, bells ringing, and many other authentic sounds that can help turn your layout into a real railroad. We’ve also an abundance of Sound Decoders specific to your model loco. 
Current Sound Library
Prime Mover
Suitable For :
EMD645E
SD39, SD40, SD40A, SD40-2, SD40T-2, SD45, SDP45, SD45X, SD45-2, SD45T-2, F45, FP45, DDA40X, GP15T, GP39, GP39-2, GP40, GP40-2

 

EMD645

SW1000, SW1001, SW1500, SW1504, MP15DC, MP15AC, MP15T, GP38, GP38-2, SD38, SD38-2, GP15AC, GP15-1
EMD710
SD70AC, SD70M-2
ALCO 244
RS-3, PA1, PB1

ALCO 539T

S-2, S-4, RS-1, RSC-1, RSD-1, DL-105, DL-107, DL-108, DL-109, DL-110

 

EMD567

F2A/B, F3A/B, F7A/B, F9A/B, BL1, BL2, FP7, FL9, FT, GP7, GP9, GP18, GP28, E6, E7, E8, E9, NW2, NW3, NW4, SW1, SW7, SW8, SW9, SW600, SW900, SW1200
 

 

 

AlCo 539T sound decoders

Recorded from an actual RS-1 locomotive

Former LS&I AlCo RS-1 was restored by the Boon & Scenic Valley Railroad and is currently being operated as M. & St. L. #244. This locomotive was recorded by Robert F. Schramm on July 9, 2008 on the property of the B&SV Railroad located in Boone, Iowa.

Special thanks go out to the Boone & Scenic Valley Railroad, Mr. Travis Stevenson, Chief Operating Officer at the B&SV R.R. for their help and cooperation in recording this locomotive.

Also special thanks to Mr. Robert Schramm in providing Model Rectifier Corporation these great sounds.

 

 

Explore our Full Line Decoder Selection Chart.

MRC Sound Decoders…

Quick Facts the Competition Doesn't Want You to Know

In addition to the widest range of sound decoders, MRC decoders feature...

  • Compatibility with NMRA DCC standards. 
  • Drop in decoders, including narrow body N scale locos. No wiring. Easy snap-in installation
  • Sound-on-sound capability
  • The widest range of decoders, including O through N scale for many popular locos
  • Sounds are recorded at trackside from working engines… not computer generated or enhanced
  • Each MRC sound decoder comes with a matched speaker
  • Depending on the decoder, ours will work with 8 16 or 32 ohm speakers
  • Supports two or four digit addressing, up to 9,999 addresses, and handles advanced consisting (CV #19)

 

 

Explore our Full Line Decoder Selection Chart.

 


MRC Enhances Its 16-Bit Sound Decoders

Back EMF control that automatically adjusts. Or if a modeler prefers, he can make adjustments manually.

More realistic sound performance. Certain sounds, previously on a pre timed loop, can now be manually activated to remain on until the modeler decides to manually turn them off. These sounds include the traction air compressor, the blower and others.

Until now, air compressor sounds only delivered a constant RPM sound. Now, like popular prototypes, MRC has enhanced the air compressor sound on its diesel decoder so it’s in synch with the RPM of the prime mover. Depending on loco type, railroaders can use the decoder either synched or non-synched to the prime mover. This is unique to MRC decoders.

MRC decoders now put authentic braking action and synchronized sound together. The company has added real-life, service braking control. Apply the brake, F5, it will prototypically slow the loco. Simultaneously, brake squeal will be activated. Stop applying the brake, or come to a stop, the squeal turns off. 

A new, Dynamic Braking feature.  Hitting Dynamic Braking (F6) not only slows the loco down, but activates the appropriate sounds. You’ll hear the cooling fans come on to cool the resistor grid, the engine notch down and the rpms drop as the train slows. 

MRC has developed the first sound decoder to replicate the sounds of three prime movers in a full-size GenSet Loco.  Now, like the prototype, it shuts down after five minutes. Developed for an HO GenSet loco, it’s the sound of three prime movers going on one-by-one, from idle to a thundering, full-throated rumble.

 

                                         

 

Lighting control… 17 of them.  Our decoders now offer 17 lighting options, including gyro lights, ditch lights, mars lights, strobe lights, oscillating head lights, on-off, dynamo, Rule 17, dim-bright-off cycle, cabin lights and more.

Stereo Sound.  If a modeler wants prototypical prime mover separation and out of synch RPMs from his dual motored E-8s, or would like one prime mover’s bell and horn sounds to emanate from the front speaker and the second prime mover’s sounds to come from the rear speaker, then he should try the new MRC (#0001922) drop-in sound decoder for E-8s.  Comes with two speakers.

 

 


Decoder features you shouldn’t do without.

Functions? We’ve got 28. Our 28 functions deliver more control/adjustments over more sounds than most other decoders. In addition to the prime mover with all its associated, random sounds, we’ve a long list of “on-the-fly” sounds that you can call up or change without stopping to access CVs. Simply use the function buttons. These on-the-fly sounds include exhaust chuff, air pump, multiple coupling and uncoupling sounds, bells, cylinder cocks, steam, air and brakes, cooling fans, blower, air release, poppet valves, dynamic braking, reverse throttle, blower injector and more.

Special steam sounds. The sounds of the firebox door opening and closing, and the shoveling of coal are available. Some of our decoders even reproduce the unmistakable sounds of a spinning auger delivering coal to the firebox.

You’ll hear the difference. While some others still use 8 bit sound, MRC has new 16 bit sound decoders which improve

overall sound quality.

Noise Abatement. Like other decoders, ours utilize  Pulse Width Modulation (PWM) to control the speed of your loco. Occasionally, at low frequencies, PWM causes “noises” like humming or buzzing from loco motors. Our decoders are designed to automatically eliminate the “noise” in just about all locos

Volume  Control. For precise volume control, many of our recently introduced decoders feature up to 16 separate volume steps, allowing you to alter the level of most sounds separately.

Leading the way in whistles and horns.  Multiple whistles and horns have become a standard feature in many decoders. MRC pioneered this capability and today offers up to 34 different ones.

Adjustable speed curves. Our decoders allow you to set your loco to react differently at every speed step. This ability lets you fine tune your loco to your specific parameters.

MRC decoders deliver real digital sounds from real prime movers…At MRC, our sound engineers go trackside and record each loco at its various speed notches. If the loco has eight notches, which most do, we record the eight notches in sequence as theRPMs are actually increasing. Our decoders allow you to hear a diesel motor actually change pitch relative to engine speed and load. When we say the sound is an actual SD45-2 with turbocharger or a specific GE or Alco loco, you can rest assured it’s for real.

More memory, more sounds, a difference you can hear… at this writing, our memory chips have four times more capacity than the nearest competitor.  This lets us put up to 34 different horns and 14 different bell sounds on a single chip, plus multiple prime movers, so you can pick the one that’s right for you.

Tiny drop-in sound decoders with matched speakers… Every decoder and system we make is designed to make life easier for you. It explains why no one has more convenient, easy to install, drop in sound decoders than MRC. These include our unique and incredibly small, one-piece, dual mode N Scale on-board decoders, complete with mounted speakers. 

 

Explore our Full Line Decoder Selection Chart.

 

 

 

Click to download DCC Manuals & Resources

 

 


Find your decoder below and click on it for specific detailed information.

 

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16 BIT HO GAUGE, UNIVERSAL ALCO/SD60/SD70/F
Item 0001913
Brand: MRC
Price: $99.98
Add to Cart Add to Cart
3 PACK OF 0001651 HO DECODER WITH JST CONNECTOR/ADAPTER
Item 0001661
Brand: MRC
Price: $79.98
Add to Cart Add to Cart
There are resources available for this product.
ACCESSORY DECODER: 4 OUTPUTS
Item 0001628
Brand: MRC
Price: $72.98
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There are resources available for this product.
DROP-IN DECODER: KATO SD80, SD90/43MAC
Item 0001808
Brand: MRC
Price: $99.98
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There are resources available for this product.
G/O UNIVERSAL: SD45/MP15
Item 0001818
Brand: MRC
Price: $99.98
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There are resources available for this product.
HO DECODER WITH JST CONNECTOR/ADAPTER
Item 0001651
Brand: MRC
Price: $29.98
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There are resources available for this product.
HO 'DIRECT CONNECT' WITH 8-PIN NMRA CONNECTOR (NO SOUND)
Item 0001834
Brand: MRC
Price: $28.98
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HO DROP-IN: ATHEARN ALCO RS-3
Item 0001820
Brand: MRC
Price: $99.98
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There are resources available for this product.
HO DROP-IN: ATHEARN MP15
Item 0001804
Brand: MRC
Price: $29.00
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There are resources available for this product.
HO DROP-IN: KATO SD40-2
Item 0001802
Brand: MRC
Price: $99.98
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There are resources available for this product.
HO GP15 LIFELIKE DECODER W/TX
Item 0001750
Brand: MRC
Price: $28.65
This item is out of stock.
Please order this item from your favorite hobby dealer.
Add to Cart
HO UNIVERSAL: DIESEL (16-BIT)
Item 0001910
Brand: MRC
Price: $99.98
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There are resources available for this product.
HO UNIVERSAL: DIESEL W /BELL & HORN
Item 0001730
Brand: MRC
Price: $42.98
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HO UNIVERSAL: STEAM W/ BELL & WHISTLE
Item 0001731
Brand: MRC
Price: $42.98
Add to Cart Add to Cart
N DROP-IN: ATHEARN FP45
Item 0001832
Brand: MRC
Price: $39.00
Add to Cart Add to Cart
N DROP-IN: ATLAS GE U23
Item 0001811
Brand: MRC
Price: $99.98
Add to Cart Add to Cart
There are resources available for this product.
N DROP-IN: ATLAS GP7, GP9, GP30, GP35 (16-bit)
Item 0001955
Brand: MRC
Price: $109.98
Add to Cart Add to Cart
There are resources available for this product.
N DROP-IN: F KATO W/SOUND (16-bit)
Item 0001957
Brand: MRC
Price: $109.98
Add to Cart Add to Cart
There are resources available for this product.
N DROP-IN: INTERMOUNTAIN FP7
Item 0001833
Brand: MRC
Price: $99.98
Add to Cart Add to Cart
N DROP-IN: KATO F40PH
Item 0001810
Brand: MRC
Price: $29.00
Add to Cart Add to Cart
There are resources available for this product.
N DROP-IN: KATO GG1 (16-bit)
Item 0001952
Brand: MRC
Price: $109.98
Add to Cart Add to Cart
There are resources available for this product.
N DROP-IN: KATO PA1 (16-bit)
Item 0001958
Brand: MRC
Price: $59.98
Add to Cart Add to Cart
There are resources available for this product.
N DROP-IN: KATO SD70MAC & AC4400 (16-bit)
Item 0001960
Brand: MRC
Price: $109.98
This item is out of stock.
Please order this item from your favorite hobby dealer.
Add to Cart
There are resources available for this product.
N DROP-IN: LIFELIKE C-LINER
Item 0001660
Brand: MRC
Price: $99.98
Add to Cart Add to Cart
There are resources available for this product.
N DROP-IN: MOST SHORT ATLAS 4 AXLE DIESELS
Item 0001812
Brand: MRC
Price: $99.98
Add to Cart Add to Cart
There are resources available for this product.
N GAUGE DECODER WITHOUT SOUND: KATO P42/E8E9
Item 0001664
Brand: MRC
Price: $9.50
Add to Cart Add to Cart
There are resources available for this product.
N GAUGE DIESEL DECODER: KATO P42
Item 0001645
Brand: MRC
Price: $99.98
This item is out of stock.
Please order this item from your favorite hobby dealer.
Add to Cart
There are resources available for this product.
N GAUGE DROP-IN DECODER WITHOUT SOUND: ATLAS GP & OTHERS
Item 0001641
Brand: MRC
Price: $11.50
Add to Cart Add to Cart
There are resources available for this product.
N GAUGE DUAL MODE DROP-IN: KATO SD40-2 & KATO SD-40
Item 0001806
Brand: MRC
Price: $99.98
Add to Cart Add to Cart
There are resources available for this product.
N GAUGE STEAM: KATO (16-bit)
Item 0001956
Brand: MRC
Price: $109.98
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There are resources available for this product.
N UNIVERSAL: DIESEL (16-bit)
Item 0001959
Brand: MRC
Price: $69.00
Add to Cart Add to Cart
There are resources available for this product.
PLATINUM SERIES HO DROP-IN: ATLAS GENSET w/ DITCH LIGHTS(16-BIT)
Item 0001916
Brand: MRC
Price: $110.98
Add to Cart Add to Cart
There are resources available for this product.
PLATINUM SERIES HO DROP-IN: ATLAS RS3/GP38 (16-BIT)
Item 0001915
Brand: MRC
Price: $110.98
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PLATINUM SERIES HO DROP-IN: ATLAS S2/S4 (16-BIT)
Item 0001917
Brand: MRC
Price: $110.98
Add to Cart Add to Cart
PLATINUM SERIES HO DROP-IN: LIFELIKE PROTO 2000 E8/E9 ALCO PA (16-BIT)
Item 0001922
Brand: MRC
Price: $110.98
Add to Cart Add to Cart
There are resources available for this product.
PREFERRED SOUND HO DECODER: 16-BIT UNIVERSAL ALCO 244
Item 0001714
Brand: MRC
Price: $74.98
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There are resources available for this product.
PREFERRED SOUND HO DECODER: 16-BIT UNIVERSAL ALCO 539T
Item 0001715
Brand: MRC
Price: $74.98
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There are resources available for this product.
PREFERRED SOUND HO DECODER: 16-BIT UNIVERSAL EMD 567
Item 0001716
Brand: MRC
Price: $74.98
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There are resources available for this product.
PREFERRED SOUND HO DECODER: 16-BIT UNIVERSAL EMD 645
Item 0001712
Brand: MRC
Price: $74.98
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There are resources available for this product.
PREFERRED SOUND HO DECODER: 16-BIT UNIVERSAL EMD 645E
Item 0001711
Brand: MRC
Price: $74.98
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There are resources available for this product.
PREFERRED SOUND HO DECODER: 16-BIT UNIVERSAL EMD 710
Item 0001713
Brand: MRC
Price: $74.98
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There are resources available for this product.
PREFERRED SOUND: 16-BIT DROP-IN ALCO 244
Item 0001622
Brand: MRC
Price: $72.98
Add to Cart Add to Cart
There are resources available for this product.
PREFERRED SOUND: 16-BIT DROP-IN ALCO 539T
Item 0001623
Brand: MRC
Price: $72.98
Add to Cart Add to Cart
There are resources available for this product.
PREFERRED SOUND: 16-BIT DROP-IN EMD 567
Item 0001624
Brand: MRC
Price: $72.98
This item is out of stock.
Please order this item from your favorite hobby dealer.
Add to Cart
There are resources available for this product.
PREFERRED SOUND: 16-BIT DROP-IN EMD 645
Item 0001620
Brand: MRC
Price: $72.98
Add to Cart Add to Cart
There are resources available for this product.
PREFERRED SOUND: 16-BIT DROP-IN EMD 645E
Item 0001619
Brand: MRC
Price: $72.98
Add to Cart Add to Cart
There are resources available for this product.
PREFERRED SOUND: 16-BIT DROP-IN EMD 710
Item 0001621
Brand: MRC
Price: $72.98
Add to Cart Add to Cart
There are resources available for this product.
PREFERRED SOUND: 16-BIT UNIVERSAL STEAM DECODER FOR HEAVY LOCOMOTIVES
Item 0001618
Brand: MRC
Price: $74.98
Add to Cart Add to Cart
There are resources available for this product.
PREFERRED SOUND: 16-BIT UNIVERSAL STEAM DECODER FOR LIGHT LOCOMOTIVES
Item 0001617
Brand: MRC
Price: $74.98
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There are resources available for this product.
SOUNDER HO: DIESEL (16-bit)
Item 0001909
Brand: MRC
Price: $53.98
This item is out of stock.
Please order this item from your favorite hobby dealer.
Add to Cart
There are resources available for this product.
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