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Blank Sound Decoders

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Function Decoders

Accessory Decoders

BLANK Sound Decoders (with factory/test sound only)

Zimo sound decoders are the industry leaders in terms of features, performance and reliability. All Zimo sound decoders provide the same set of features varying onlyin their physical attributes such as size, motor power output, and number of function outputs.

Which decoder should I choose? Well, this depends on the scale and model you are installing into, how much space you have, and if there are any specific features you need. Contact YouChoos if you need help.

Prices listed below are for factory-default decoders (for no extra cost, choose any YouChoos sound project to have loaded - browse from the sound list rather than here to do this). Speaker is not included.

	MS450		30x15x4mm 1.2A continuous / 2.5A peak 16V direct stay-alive (unlimited) with smart-stop 8pin on wired harness or PluX22 direct plug-in 3W audio at 4 ohm or 8 ohm 10 Functions				MS450 Wires only - may be supplied as R version anyway £119 MS450R 'R' version 8pin on wired harness £120 MS450P22 PluX22 direct plug-in version £115
	MS440		30x15x4mm 1.2A continuous / 2.5A peak 16V direct stay-alive 21pin direct plug-in 3W audio at 4 or 8 ohm 8 Functions With native 16V stay-alive supplied with example capacitor (normally 1000uF 16V)				MS440C 'C' Version (FA3,4,5,6 outputs are logic-level) £115 MS440D 'D' Version (All 8 full-power AUX outputs) - will be supplied as 'C' but re-configured to suit 'D' options £115
	MS480		19x11x3.1mm 0.8A continuous / 1.5A peak 16V direct stay-alive (up to 1000uF) or more via LifeLink or STAC01 8pin on wired harness, 6pin on wired harness or PluX16 direct plug-in 1W audio at 8 ohm 6 Functions				MS480 Wires only - may be supplied as R or F version anyway £119 MS480R 'R' version 8pin on wired harness £120 MS480F 'F' version 6pin on wired harness £120 low stock MS480P16 PluX16 direct plug-in £115 low stock
	MS490		19x9x3mm 0.7A continuous / 1.5A peak 16V direct stay-alive (up to 1000uF) or more via LifeLink or STACO 8pin on wired harness, 6pin on wired harness or 6pin direct plug-in 1W audio at 8 ohm 4 full-power functions				MS490 Wires only - may be supplied as R or F version anyway £105 no packet, repaired, fully working MS490N 6pin direct plug-in £105 no packet, repaired, fully working
	MS491		19x7.8x2.8mm 0.7A continuous / 1.5A peak 16V direct stay-alive (up to 1000uF) or more via LifeLink or STACO 8pin on wired harness, 6pin on wired harness or 6pin direct plug-in 1W audio at 8 ohm 5 full-power functions Replaces MS490				MS491 Wires only - may be supplied as R or F version anyway £119 MS491R 'R' version 8pin on wired harness £120 MS491F 'F' version 6pin on wired harness £120 MS491N 6pin direct plug-in £115
	MS500		14x10x3mm 0.7A continuous / 1.5A peak 16V direct stay-alive (up to 1000uF) or more via LifeLink or STAC01 wires-only, or 6pin direct plug-in 1W audio at 8 ohm 4 Functions				MS500 Wires only - may be supplied as R or F version anyway £119 MS500R 'R' version 8pin on wired harness £120 MS500F 'F' version 6pin on wired harness £120 MS500N 6pin direct plug-in £115
	MS580		25x11x4mm 0.8A continuous / 1.5A peak Tantalums on board + 5V direct stay-alive (unlimited), or up to 1000uF/16V via direct solder pads, or unlimited 16V via LifeLink or STAC0 Next18 direct plug-in 1W audio at 8 ohm 4 full power Functions plus 2 logic level				MS580N18 Next18 with onboard Tantalums for stay-alive £105 no packet, repaired, fully working
	MS581		24.9x10x4mm 0.8A continuous / 1.5A peak Tantalums on board + 5V direct stay-alive (unlimited), or up to 1000uF/16V via direct solder pads, or unlimited 16V via LifeLink or STAC0 Next18 direct plug-in 3W audio at 4 ohm 6 full power Functions plus 2 logic level Replaces MS580				MS581N18 Next18 with onboard Tantalums for stay-alive £115 MS581N18G Next18 with wires for external stay-alive Includes 2x mini GoldCaps £115
	MS590		15x10x3mm 0.7A continuous / 1.5A peak 16V stay-alive possible via SACC16/LifeLink Next18 direct plug-in 1W audio at 8 ohm 4 Functions				MS590N18 Micro Next18 £120
	MS540		19x8.7x2.8mm 0.8A continuous / 1.5A peak Up to 1000uF/16V via direct solder pads, or unlimited 16V via LifeLink or STAC0 through pads Next28/E24 direct plug-in 1W audio at 8 ohm 8 full power Functions plus 4 logic level				MS540E24 E24/Next28 £115 coming soon
	MS560		27x14x2.6mm 0.7A continuous / 1.5A peak Stay-alive via LifeLink or STAC0 through pads Kato slide-in board (IET 800, Eurostar etc.) 1W audio at 8 ohm 4 full power Functions				MS560 Kato-style N Gauge sound decoder £115 limited stock
	MS950		50x23x15mm 4A continuous / 10A peak Big stay-alive on-board Pins to plug into 'L' type interface 2x 3W audio at 4 or 8 ohms 11 Function Outputs				MS950 Large scale sound decoder Pins for 'L' type socket £165 LOK950P 'L' type adapter plate to take MS950 decoder 61x25x10mm Solder pads £15 LOK950K 'L' type adapter plate to take MS950 decoder 75x25x10mm Screw Terminals £25 MS950LOKP Large scale sound decoder Pins for 'L' type socket Combi-package supplied with LOK950P adapter plate 61x25x15mm (combined height) £180 MS950LOKK Large scale sound decoder Pins for 'L' type socket Combi-package supplied with LOK950K (screw terminal) adapter plate 75x25x10mm (combined height) £190
	MS990		50x40x13mm 6A continuous / 10A peak Big stay-alive on-board Pins to plug into 'XL' type interface or screw terminal version 2x 10W audio at 4 or 8 ohms 15 Function Outputs (2A total max) 6 servo connections additional low voltage outputs for 1.5A, 0.5A and 2A 4 switch inputs				MS990K Large scale sound decoder Screw terminals £210 MS990L Large scale sound decoder Pins for 'XL' type socket £200 LOK990P 'XL' type adapter plate to take MS990L decoder 62x45x10mm Solder pads for all connections £15 MS990LOKP Large scale sound decoder Pins for 'XL' type socket Combi-package supplied with LOK990P adapter plate Total height plugged in is 18mm £215
	MX645		30x15x4mm 1.2A continuous / 2.5A peak 16V direct stay-alive 3W audio / 10 Functions With native stay-alive supplied with example capacitor				MX645 wires only (no plug) £90 no packet, repaired, fully working MX645R 8pin version on wired harness obsolete MX645P22 PluX22 direct plug-in version obsolete
	MX644		30x15x4mm 1.2A continuous / 2.5A peak 25V direct stay-alive (16V via LifeLink/SACC16) 21pin direct plug-in 3W audio / 8 Functions With native 25V stay-alive supplied with example capacitor				MX644D 'D' Version (All 8 full-power AUX outputs) £90 no packet, repaired, fully working MX644C 'C' Version (5th+6th AUX outputs are logic-level) obsolete
	MX648		20x11x4mm 0.8A continuous / 1.5A peak Stay-Alive via LifeLink/SACC16 1W audio / 6 Functions				MX648 wires only (no plug) £90 no packet, repaired, fully working MX648R 8pin on wired harness version obsolete MX648F 6pin on wired harness version obsolete MX648P16 PluX16 direct plug-in version obsolete
	MX649		23x9x4mm 0.7A continuous / 1.5A peak Stay-Alive via LifeLink/SACC16 1W audio / 4 Functions				MX649 wires only (no plug) obsolete MX649R 8pin on wired harness version obsolete MX649F 6pin on wired harness version obsolete MX649N 6pin direct plug-in version £90 no packet, repaired, fully working
× Cancel	MX658N18		25x10.5x4mm 0.8A continuous / 1.5A peak Stay-Alive via LifeLink/SACC16 if model provides connections Next18 direct plug-in 1W audio / 4 Functions				£90 no packet, repaired, fully working
× Cancel	MX659N18		20x9.5x3mm 0.7A continuous / 1.5A peak Stay-Alive via LifeLink/SACC16 if model provides connections Next18 direct plug-in 1W audio / 4 Functions Slightly less stay-alive on board than then 658 but very very small!				obsolete
× Cancel	MX660		42x9x2.5mm 0.8A continuous / 1.5A peak Extra Stay-Alive via LifeLink/SACC16 Drop-in replacement board to suit many N gauge diesel models (and others) 1W audio / 6 Functions Solder pad connections Built-in resistors for LED lighting				£105 limited stock
	MX696KS		69x29x19mm 4A continuous / 10A peak 16V direct stay-alive 10W audio / 8 Functions With stay-alive connections				obsolete
	MX699K		50x40x14mm 6A continuous / 10A peak Stay-Alive Built In 10W audio With native stay-alive onboard 3F SuperCap stay-alive				MX699KS 8 AUX functions version na obsolete MX699KV Full 14 AUX functions version na obsolete
× Cancel	Replacement Zimo N/OO MX6*/MS4*/5* series Sound Decoder (small)		Send back your damaged Zimo sound decoder for immediate replacement Contact YouChoos with required project and details Like-for-like. Small scale decoders Includes re-load (YouChoos or free projects) and new doc pack.				£30
× Cancel	Replacement Zimo N/OO MX69*/MS9* series Sound Decoder (large)		Send back your damaged Zimo sound decoder for immediate replacement Contact YouChoos with required project and details Like-for-like. Large scale decoders Includes re-load (YouChoos or free projects) and new doc pack.				£40

Standard Decoders

Standard decoders mean that you can control motor and one or more auxilliary/function outputs (for lighting, smoke etc.). These are NOT sound decoders. Choose based on size, motor power output, and required outputs.

Zimo standard decoders are probably the best available for fine motor control and offer a variety of CVs to assist in tuning outputs to get the best from your models.

Ask if you need help choosing! YouChoos holds stock of most of these decoders.

	Zimo MX600		25x11x2mm - super thin 0.8A continuous / 1.5A peak Stay-Alive via LifeLink/SACC16 4 Functions 8pin on wired harness version Affordable Zimo greatness!				MX600R 8pin wired £25
	Zimo MX615		8.2x5.7x2mm 0.5A continuous / 1A peak Stay-Alive via LifeLink/SACC16 4 Functions Available in 6pin direct plug-in version or wires-only version (may be supplied with 6pin or 8pin plug on the end) Zimo's smallest ever motor decoder! NOTE: should NOT be used on Analogue systems!				MX615N 6pin direct £36 MX615 Wires-only (may be supplied as R 8pin or F 6pin version) £38
	Zimo MX616		8x8x2.4mm 0.7A continuous / 1.5A peak Stay-Alive via LifeLink/SACC16 6 Functions Available in 6pin direct plug-in version or wires-only version (may be supplied with 6pin or 8pin plug on the end)				MX616N 6pin direct £34 MX616 Wires-only (may be supplied as 'R' 8pin or 'F' 6pin on harness) £36
	Zimo MX617		13x9x2.5mm 0.8A continuous / 1.5A peak Stay-Alive via LifeLink/SACC16/STACO1 4 Functions Available in 6pin direct plug-in version or wires-only version (may be supplied with 6pin or 8pin plug on the end)				MX617R 8pin on wired harness 'R' version £34 temp out of stock MX617F 6pin on wired harness 'F' version £25 MX617N 6pin direct plugin 'N' version £25 temp out of stock
	Zimo MN170		12x8.6x2.3mm 0.7A continuous / 1.5A peak Stay-Alive via LifeLink/SACC16/STACO 6 Functions full power plus 2 Logic Level Available in 6pin direct plug-in version (N) or 6pin on harness (F) or 8pin on harness (R) MN based on MS technology Replaces MX617				MN170N 6pin Direct £34 MN170F 6pin plug on wired harness 'F' version £36 MN170R 8pin on wired harness 'R' version £36
	Zimo MN180		13.3x9.5x2.6mm 0.7A continuous / 1.5A peak Stay-Alive via solder pads to max 15000uF/15V 4 Functions +4 Logic Level Next18 direct plug-in interface MN based on MS technology				MN180N18 Next18 £34
	Zimo MN330		30x15.3x2.5m 1.2A continuous / 2.5A peak Unlimited direct connection of 15V stay-alive (1000uF included) 10 Functions PluX22 Direct plug-in version MN330 replaces MX637P22 and MX633P22				MN330P22 PluX22 £34 MN330R 8pin on harness £36
	Zimo MN340		28x15.3x2.5mm 1.2A continuous / 2.5A peak Stay-Alive 1000uF/16V direct sample included or unlimited 16V direct 8 Functions 21pin 'D' (all full power) and 'C' (FA3-6 Logic Level) switchable by CV Replaces MX634 and MX638				MN340C 21pin (can be changed 'C'/'D' variants with CV change) £34 temp out of stock
	Zimo MN300		18x10.5x3.1mm 1A continuous / 1.5A peak Stay-Alive up to 1000uF/16V direct (sample 1000uF cap included) or greater via LifeLink/SACC16/STACO 6 Functions Available in 6pin wired (F) version, 8pin wired (R) and PluX16 Direct plugin versions Replaces MX630				MN300F 6pin wired £36 MN300R 8pin wired £36 MN300P16 PluX16 direct plugin £34
	Zimo MX623		20x8.5x2.5mm 0.8A continuous / 1.5A peak Stay-Alive via LifeLink/SACC16 4 Functions Available in 6pin wired (F) version on 8pin wires (R) version				MX623F 6pin wired £32 last few MX623R 8pin wired obsolete
	Zimo MX630		20x11x3.5mm 1A continuous / 2.5A peak Stay-Alive via LifeLink/SACC16 6 Functions Available in 6pin wired (F) version or 8pin wired (R), or PluX16 version				MX630F 6pin wired obsolete MX630R 8pin wired obsolete MX630P16 PluX16 obsolete
	Zimo MX633		22x15x3.5m 1.2A continuous / 2.5A peak 16V direct stay-alive 10 Functions 8pin on wired harness, or PluX22 direct plug-in versions				MX633R 8pin wired obsolete
	Zimo MX634		20.5x15.5x4mm 1.2A continuous / 2.5A peak 25V direct stay-alive (16V via LifeLink/SACC16) 6 Functions Available in 8pin wired (R) version or 21pin direct (D - switchable to C)				MX634R 8pin wired obsolete MX634D 21pin (can be changed to 'C' variant with CV change) obsolete
	Zimo MX635		25x15x4.7mm 1.8A continuous / 2.5A peak 16V direct stay-alive 10 Functions High power 8pin on wired harness version Direct connection of 16V capacitors for stay-alive				MX635R 8pin wired £42 MX635P22 PluX22 £40 low stock
	Zimo MX636		25x15x3.5mm 1.8A continuous / 2.5A peak 16V direct stay-alive 8 Functions 21pin direct plug-in version				MX636D 21pin £40
× Cancel	Zimo MX638		20.5x15.5x4mm 1.2A continuous / 2.5A peak Stay-Alive via LifeLink/SACC16 if model provides connections 6 Functions 21pin MTC direct plug-in version				MX638D 21pin obsolete
× Cancel	Zimo MX696N		55x29x15mm 4A continuous / 10A peak 16V direct stay-alive 8 Functions with stay-alive facility Pin/solder connections				MX696N pins £90 one remaining

Function Decoders

Function decoders offer ONLY auxilliary/function outputs, and DO NOT have output for controlling motor or sound.

They have a wide variety of applications, but most commonly used to add lighting, smoke, or auto-coupling control to a vehicle that has no motor. For example, many modern steam locos have a DCC decoder socket in the tender, which gives control of the motor, so a separate function decoder can be added in the boiler of that loco to provide control of loco lamps, firebox glow and other special features.

Another common use is to provide DCC control of coach lighting, which is particularly effective where the decoder supports a stay-alive capacitor which helps eliminate flicker.

× Cancel	Zimo MX688N18		15x9.5x2.8mm 0.7A 6 Functions Next18				obsolete
× Cancel	Zimo MX689N18		14x9.5x2.1mm 0.7A 8 Functions Next18 Stay-alive possible via LifeLink from pads on reverse				£25
× Cancel	Zimo MX671		10.5x8x2.2mm 0.7A 6 Functions Available in 6pin direct version (N) or wires only version (wired version includes Ground wire for stay-alive pre-connected). Direct connection of 25V stay-alive supported				MX671 Wires-only (often supplied with 6pin or 8pin plug on the wired harness) £21 low stock available MX671N 6pin Direct £25 low stock available
× Cancel × Cancel	Zimo MX686		20.5x15.5x4mm 1.2A 8 Functions 21pin direct version				MX686D 21pin MTC Direct £30 temp out of stock
× Cancel	Zimo MX685		20x11x3.5mm 1A 8 Functions wires-only version				MX685 wires only £26
× Cancel	Zimo MX675		25x15x4mm 1.8A, 12 Functions, 2 Servo wires-only version				MX675V wires only £34 special order (no stock held)
× Cancel	Zimo MX605SL		Lighting function decoder for Kato models				MX605SL Headlight PCB function decoder designed for Kato N gauge models e.g. Class 800 £18 temp out of stock special order
× Cancel	Zimo MX687W		28x15.5x4mm 1.2A 8 Functions with stay-alive facility, full feature/power version of MX686 wires-only version				MX687W wires only £36 limited stock

Accessory Decoders

Accessory decoders are static decoders on your layout, deployed to control points and lighting features. Some allow control of solenoid-style point motors, and others give fine servo-control for slow-action points. You need a DCC controller that understands how to drive accessory decoders (most controllers other than the very basic ones can do this).

× Cancel	Train-Tech PC200 Quad Point DCC Controller		Controls 4 solenoids by DCC and external switches. Route store sets routes with one command. Features a built-in CDU for efficient operation of solenoid motors. Easy to programme.				£43
× Cancel	Train-Tech PC2 Quad Point DCC Controller		Controls 4 solenoids by DCC (same as PC200 but without external switch connections)). Route store sets routes with one command. Features a built-in CDU for efficient operation of solenoid motors. Easy to programme.				£38 temp out of stock
× Cancel	DigiKeijs DR4018		16-channel accessory switching decoder (not for servos)				obsolete use YD8116
× Cancel	YaMoRC YD8008 CDU Solenoid point accessory decoder		High-current, 8-way accessory switching decoder for solenoids				hopefully back before long
× Cancel	YaMoRC YD8116 light switching accessory decoder		16-way accessory switching decoder for lighting, 2.5A independent outputs, max 5A combined.				hopefully back before long
× Cancel	YaMoRC YD8044 CDU Solenoid point accessory decoder with Frog		High-current, 4-way accessory switching decoder for solenoids, with Frog switching built-in				£63
× Cancel	DigiKeijs DK50018		16-channel accessory switching decoder (not for servos). The DK50018 is the next generation of smart devices, equivalent to the DR4018 but with BlueTooth connection to DigiKeijs' iOS/Android app for direct and easy configuration.				obsolete
× Cancel	DigiKeijs DR4018 with 8x MP1 MTB Point Motors		Ideal companions: DR4018 16-channel accessory decoder (not for servos), complete with 8x of the excellent MTB MP1 slow-action point motors				obsolete alternative coming soon
× Cancel	DigiKeijs DR4024		4-channel accessory decoder for servos with 4 additional switching outputs				obsolete alternative coming soon
× Cancel	DigiKeijs DR4024 Kit		Includes DR4024 4-channel accessory decoder for servos with 4 additional switching outputs, plus 4 mini-servos and 50cm servo extension cables				obsolete alternative coming soon
× Cancel	Zimo MX820E		19x11x2mm 1A, 1 point (not servo), 2 inputs				temp out of stock
× Cancel	Zimo MX820V		19x11x3mm 1A, 2 points (not servos), 4 inputs				£34
× Cancel	Zimo MX820X		19x11x2mm 1A, 1 point (not servo), 2 inputs, 8 lights				£38
× Cancel	Zimo MX820Y		19x11x3mm 1A, 2 points (not servos), 4 inputs, 16 lights				£42
× Cancel	Zimo MX820Z		19x11x3mm 1A, 0 points, 0 inputs, 16 lights				temp out of stock
× Cancel	Zimo MX821S		105x50x11mm 3A, 8 points (3-pin servos), 0 inputs, 0 lights				£66
× Cancel	Zimo MX821V		105x50x11mm 3A, 8 points (3-pin servos), 16 inputs, 16 lights (100mA each), Railcom for feedback of position				£96
× Cancel	DigiKeijs DR5013 Ultimate Reversing Loop Module		The Digikeijs DR5013 digital reverse loop module offers a total solution. This reverse loop module contains many aspects that make it a good module. Think of AutoReverse short circuit detection, busy indication of the reverse sections (T, S1, S2), an integrated Railcom and much more. This reverse loop module also offers you the possibility of easy configuration via a USB connection.				obsolete alternative coming soon
× Cancel	DigiKeijs DR4050 RGB Controller		RGB LED controller including accessories to create night/day lighting effects				obsolete