Skip to content

A Class - Crossley Sound Decoder

Original price $112.00 - Original price $112.00
Original price
$112.00 - $112.00
Current price $112.00
in stock, ready to be shipped
LokSound V5 DCC Sound Chip

Designed specifically for the Irish Railway Models A Class locomotive, this decoder works seamlessly with the onboard lighting, PowerPack stay-alive system and dual speaker configuration to reproduce the characteristic sound and function of an Crossley engined A class at work.

This chip is the perfect companion for the Crossley Engined versions.


The LokSound 5 decoder can reproduce up to 10 channels simultaneously. Each channel offers up to 16 Bit / 31250 kHz and thus we have finally achieved hi-fi sound quality on your layout. For all practical purposes one cannot detect any difference to the original. A class D audio power amplifier with up to 3W output power feeds the speakers with a permitted impedance of 4 – 32 Ohms. The huge 128 MBit sound memory assures sufficient storage capacity.

The volume of all individual sound fragments may be adjusted separately. The outstandingly flexible sound engine without a rigid flow chart facilitates a prototypical simulation of all conceivable rail vehicles. Three separately adjustable braking functions and two alternative load scenarios provide you with maximum control of your vehicles.


We are quite aware that you want your locomotives to be as realistic as possible. Therefore we have packed many function outputs into it.  Subject to the type of interface every LokSound 5 has at least 10 amplified outputs. The decoders with PluX22 or 21MTC interface have an additional 4 outputs for controlling servos or as logic outputs. Of course, all important lighting functions are supported. The brightness of each output may be adjusted separately. The decoder supports the automatic push and pull movements – known as the coupler waltz - required for reliable operation of digital couplers such as the ones by ROCO® and Krois® as well as Telex® couplers.

Motor control

Motor control of the LokSound 5 has been further improved. A variable PWM pulse frequency ranging from 10 kHz to 50 kHz assures perfect silent operation, particularly for coreless motors. Thus the typical hum is a thing of the past. Load control can now be adjusted with up to 10 separate CVs and thus will manage even the most difficult cases. The unique “Auto Tune” function facilitates the automatic calibration of the decoder to perfectly match the motor. The LokSound 5 decoder supplies up to 1.5A motor current, which is quite sufficient even for older motor types.

Customer Reviews

Based on 23 reviews
Stephen Newman
Vintage diesel

Transformed model into a state of the art gem

John Hamill

A Class - Crossley Sound Decoder

Andrew Skinner
Sound job!

I haven't fitted the decoder yet, as I currently have no layout, but from what I have seen & heard on Youtube, IRM have nailed it yet again!

James Moran
A Class Crossley Sound Decorder

There is a good Realistic Sound of what they Sounded like in the Very Early 1960 's As they Began to Be Replaced with more and more General motors Equitemen plus new GM motors Engines The Distinctive Roar From the Crossley Decorder Reminds me of when Some A class locos would pass by on Full power would Shake a Station while the General motors ones would not Cause as much as a Vibration these are memories From a young Child less than ten at the time who is now just Hitting 62 myself well Done potentional Customers make sure you purchase one Before they All Sold and gone for ever you won't Regret go on Give it a whirl buy one James very Satisfied customer

Patrick Robinson
Crossley Sound Decoder

One of the best sounds you can have on a model train. Well done IRM

J Slaney
Very happy

As I am "starting again" on my layout, haven't had a chance to use this decoder yet. If it is like the "GM" decoders it will be grand. (Had to have a Crossley one for the Crossley A I have). IRM were brilliant to deal with as always.

Philip Cook
A Class Crossley Sound Decoder

Excellent service from IRM once again. I placed the order on Thursday night and received the item in Australia on the following Tuesday.

IRM have done a great job with the recordings, and the sound decoder really brings the A Class to life. (I can almost smell the smoke on startup ;-)

This would also be a good decoder to use in a WAGR X Class, if you were so inclined.

Patrick Davey
Super Sound!

Well done to Irish Railway Models for sourcing the sounds to bring us this much anticipated chip! The locos sound great and as always the service from IRM was first class.

Charlie Harris
Crossley Sound Decoder

I am very happy with the sound produced by this decoder. In my opinion there is a very nice balance between the inside engine room sound and the outside exhaust sound.And with all the other functions it is all in all an excellent product.Thanks for the great work you are all doing in Irish Railway Modelling.
Kind Regards.
Charlie Harris

Brendan Farrell
The GOAT of sound decoders

Fantastic gravely sound. So real and impressive. I was almost expecting to smell the diesel fumes.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare