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Marshall Amp Parts

Potentiometers & Knobs | Jacks & Jackplates | Switches | Amp Logos | Cabinet Parts
Miscellaneous | Output Transformers | Power Transformers | Filter Chokes

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  • We recommend always opening the amp and verifying part values and sizes before ordering
  • Physical size measurements refer to the diameter of the pot casing
  • Values on pot have a letter associated with it - A=Audio , B=Linear , C=Audio
  • 24mm (approx 15/16") - used on JCM800 and older models
  • 16mm (approx 5/8") - used on JCM900, Solid State

    • ALWAYS DRAIN CAPS BEFORE OPENING!!
    Plug in Speakers. With sound coming thru speakers turn power off with standby still on. Wait 5 minutes. Unplug & open.

    Model Product Description Price . . Purchase
    GN22KA24-MAR Marshall PC mount Audio Pot
    22K Audio 24mm , Washers not included.     		$ 6.99   Marshall PC mount Audio/Log 22k Pot
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    GN22KL24-MAR Marshall PC mount Linear Pot
    22K Linear 24mm , Washers not included     		$ 6.99   Marshall PC mount Linear 22k Pot
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    GN220KL24-MAR Marshall PC mount Linear Pot
    220K Linear 24mm , Washers not included.     		$ 6.99   Marshall PC mount Linear 220k Pot
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    GN220KA24-MAR Marshall PC mount Audio Pot
    220K Audio 24mm , Washers not included.     		$ 6.99   Marshall PC mount Audio 220k Pot
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    GN1MA24-MAR Marshall PC mount Audio Pot
    1M Audio 24mm , Washers not included.     		$ 6.99   Marshall PC mount Audio 1M Pot
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    GN4D7KL24-MAR Marshall PC mount Linear Pot
    4.7K Linear 24mm , Washers not included.     		$ 6.99   Marshall PC mount Linear 4.7k Pot
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    GN4D7KA24-MAR Marshall PC mount Audio Pot
    4.7K Audio 24mm , Washers not included.     		$ 6.99   Marshall PC mount Audio 4.7k Pot
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    GN100KL24-MAR Marshall PC mount Linear Pot
    100K Linear 24mm , Washers not included.     		$ 6.99   Marshall PC mount Linear 100k Pot
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    GN100KA24-MAR Marshall PC mount Audio Pot
    100K Audio 24mm , Washers not included.     		$ 6.99   Marshall PC mount Audio 100k Pot
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    GN1MPP24-MAR Marshall Push/Pull PC mount Audio Pot
    1M Push/Pull 24mm , Washers not included.     		$ 15.99   Marshall PC mount Audio 1M Push/Pull Pot
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    GN1MA16-MAR Marshall 1M Audio Pot
    16mm , Nuts & Washers not included.
    Dimensions     		$ 5.99   Marshall 1M Audio Pot
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    GN100KA16-MAR Marshall 100K Audio Pot
    16mm , Nuts & Washers not included
    Dimensions     		$ 5.99   Marshall 100K Audio Pot
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    GN220KL16-MAR Marshall 220K Linear Pot
    16mm , Nuts & Washers not included
    Dimensions     		$ 5.99   Marshall 220K Linear Pot
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    GN100KL16-MAR Marshall 100K Linear Pot
    16mm , Nuts & Washers not included
    Dimensions     		$ 5.99   Marshall 100K Linear Pot
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    GN22KL16-MAR Marshall 22K Linear Pot
    16mm , Nuts & Washers not included
    Dimensions     		$ 5.99   Marshall 22K Linear Pot
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    GN10KL16-MAR Marshall 10K Linear Pot
    16mm , Nuts & Washers not included
    Dimensions     		$ 5.99   Marshall 10K Linear Pot
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    GN4K716-MAR Marshall 4.7K Linear Pot
    16mm , Nuts & Washers not included
    Dimensions     		$ 5.99   Marshall 4.7K Linear Pot
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    GN100KRA16-MAR Marshall 100K Audio Dual Reverse Pot
    16mm , Nuts & Washers not included.     		$ 9.99   Marshall 100K Audio Dual Reverse Pot
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    GN10KRL16-MAR Marshall 10K Linear Dual Reverse Pot
    16mm , Nuts & Washers not included.     		$ 9.99   Marshall 10K Linear Dual Reverse Pot
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    GN22KBIAS-MAR Marshall 22K Linear Bias/Trim Pot
    For JMP    		 $ 8.99   Marshall 22K Linear Bias/Trim Pot
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    GNORSCR-MAR8 Marshall Original Amp Knobs - Gold Top (set 8)
    Dark Brown Base with Set Screw
    Marshall Packaging    		 $14.99   Marshall Amp Knob
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    GNORPSH-MAR8 Marshall Original Amp Knobs - Gold Top (set 8)
    Dark Brown Base Push On
    Marshall Packaging    		 $14.99   Marshall Amp Knob Push On
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    GN342KN-MAR1 Marshall Style Amp Knob - Silver Top (single)
    Set Screw Black Bottom slightly taller than original
  • Height = 3/4"
  • Width at base = 3/4"
  • Shaft = 1/4"
    •      		$3.49   Marshall Amp Knob
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    GN343KN-MAR1 Marshall Style Amp Knob - Silver Top (single)
    Push On Black Bottom slightly taller than original
  • Height = 3/4"
  • Width at base = 3/4"
  • Shaft = 1/4"
    •      		$3.49   Marshall Amp Knob
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    Model Product Description Price . . Purchase
    Marshall Jacks     Top of Page
    GN530AM-MAR Marshall Amp Input Jack
    PC mount 6 terminals
    Marshall part# J2071
    Measurements     		$7.99   Marshall Jack 6 PC mount terminals
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    GN531AM-MAR Marshall MG Series Input Jack
    Marshall Part # J1032 - HTJ-064-11I
    PC Mount 3 terminals    		 $5.99   Marshall Amp Jack 3 PC mount terminals
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    GN103AEL-MON 1/4" Mono Input Jack PCB Mount Plastic Nut
    4 Terminal. Replacement for JCM 900 cabinets.
    Also used in Ampeg, Crate and others.     		$2.29   PCB Mount Mono Input Jack
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    GN502EL-MON 1/4" Mono Input Jack w/Plastic Nut
    4 Solder Terminals Switched
    Used in many modern Marshall Amps     		$2.29   4 Terminal Mono Input Jack
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    GNH5NEL-NTW Black Plastic Nut & Fiber Washer for following jacks:
    GN103AEL-MON / GN104AEL-STE / GN502EL-MON
    Used in Marshall, Ampeg, Crate and others
    * washer color may vary depending on availability         		$.99   PCB Mount Mono Input Jack
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    GN800AM-MAR Marshall Switchable Jack Plate
    Stereo/Mono speaker cabinets
    Pre-wired for 2 - 8ohm speaker Loads
    Stereo = 2 x 8 ohm
    Mono = 4 or 16 ohm
    (includes wires)
    Back Image    |    Measurements     		$49.99   Marshall Jackplate 
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    GN801AM-MAR Marshall Speaker Jack Plate (no switch)
    Stereo/Mono speaker cabinets
    Pre-wired for 2 - 16ohm speaker Loads
    Stereo = 2 x 16 ohm
    Mono = 8 or 16 ohm
    (includes wires)
    Back Image    |    Measurements     		$34.99   Marshall Jackplate
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    GN150AM-MAR Marshall Speaker Jack Cup
    for mono single speaker jack
    Jack and wires not included
     Back Image    |    Measurements     		$10.99   Marshall Jack Cup
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    Model Product Description Price . . Purchase
    Marshall Amp Switches     Top of Page
    GNH491AM-MAR Lighted Marshall Power Switch
    JCM and others
    Back of Switch     		$ 6.99   Marshall Amp Power Switch
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    GNH490AM-MAR Black Marshall Standby Switch
    JCM and others
    Back of Switch     		$ 4.99   Marshall Amp Standby Switch
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    GNH489AM-MAR Black Marshall Rocker Switch
    MG Power Switch
    Back of Switch
    Measurements     		$ 4.99   Marshall MG Power Switch
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    Model Product Description Price . . Purchase
    Marshall Amp Logos     Top of Page
    GN6LOG-MAR 6" Marshall Plastic White Logo $ 14.99   Marshall Plastic White Logo 6 inch
    GN9LOG-MAR 9" Marshall Plastic White Logo $ 17.50   Marshall Plastic White Logo 9 inch
    GN11LOG-MAR 11" Marshall Plastic White Logo $ 21.99   Marshall Plastic White Logo 11 inch
    GN6GLOG-MAR 6" Marshall Gold Logo
    Used on many 60's models    		 $ 28.99   Marshall Gold Logo 6 inch
    GNLBDG-MAR Marshall JCM 900 Lead Plate Gold
    3 3/8" x 1 1/8"     		$ 5.99   Marshall JCM 900 Lead Plate, Gold
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    GNVBDG-MAR Vintage 1960 Marshall Badge Gold
    3 3/8" x 1 1/8"     		$ 5.99   Marshall Vintage 1960 Badge Gold
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    GNCBDG-MAR Marshall 1960 Classic Badge Gold
    3 3/8" x 1 1/8"     		$ 7.99   Marshall 1960 Classic Badge Gold
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    Model Product Description Price . . Purchase
    Cabinet Parts     Top of Page
    GNH252AM-MAR Marshall Amp Sprung Feet 2pc $ 13.99   Marshall Sprung Feet
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    Model Product Description Price . . Purchase
    Misc     Top of Page
    GN200AM-MAR Marshall Amp Fuse Holder
    Fits chassis hole size 5/8" - 11/16"     		$ 4.99   Marshall Fuse Holder 
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    GNW124AM-012 Marshall Style 3 prong 12' Ac Cable
    1 male end, 1 female end     		$ 8.99   Marshall AC Cable 12ft
    GN502AM-MAR Marshall Vintage Type ohm selector
    male part replacement
    9mm point to point    		 $ 11.99   Marshall Ohm Selector
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    GNOHMSEL-MAR Marshall Impedance Selector
    Rotary Switch 4/8/16
    Rear View    		 $ 23.99   Marshall Ohm Selector
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    GNVOLTSEL-MAR Marshall Voltage Selector
    Modern Style 110/220/230
    Rear View    		 $ 35.99   Marshall Volt Selector
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    * We order transformers per order, please allow 7-10 business days for delivery *
    Make sure you know what transformer is right for you. Installation of the wrong transformer can severely damage an amp.
    The amount of power running thru a transformer is extremely dangerous. Always have installation done by a qualified technician.
  • ALWAYS MAKE SURE THE AMP IS NOT PLUGGED IN BEFORE ATTEMPTING REPAIR!
  • TUBE AMPS PRODUCE DANGEROUS AMOUNTS OF CURRENT
  • CAPACITORS CAN STORE ELECTRICITY AFTER THE AMP IS OFF
  • MAKE SURE CAPACITORS ARE DRAINED BEFORE ATTEMPTING REPAIRS

    * * IF YOU ARE NOT SURE SEEK OUT A QUALIFIED TECHNICIAN, HE'S A LOT CHEAPER THAN A FUNERAL! * *

    • Model Product Description Price . . Purchase
    Marshall Output Transformers     Top of Page
    GN050OT-MAR Marshall Replacement Output Transformer 50W

    Built to vintage specs with exact interleave ratios and materials. Great for upgrading later issue MarshallTM amps. Gives great classic sound. Good replacement for JMP and JCM 800's. For EL34!
    Mounting centers are 2.50" x 2.50"

    		 $109.95   Marshall 50 watt Output Transformer

    GN0100OT-MAR Marshall Replacement Output Transformer 100W

    Built to vintage specs with exact interleave ratios and materials. Great for upgrading later issue MarshallTM amps. Gives great classic sound. Good replacement for JMP and JCM 800's. For EL34!
    Mounting centers are 3" x 3"

    		$119.95   Marshall 100 watt Output Transformer

    GNJTM45OT-MAR Marshall JTM45 Output Transformer

    MarshallTM output transformer. For JTM45

     

    		 $103.95   Marshall JTM45 Output Transformer

    GN9100OT-MAR Marshall JCM900 Output Transformer 100W

    MarshallTM 100 watt output transformer. For Marshall JCM900

     

    		 $234.95   Marshall JCM900 100 watt Output Transformer

    GN9500OT-MAR Marshall JCM900 Output Transformer 50W

    MarshallTM 50 watt output transformer. For JCM900.

    		 $103.95   Marshall JCM900 100 watt Output Transformer

    GNJTM30OT-MAR Marshall JTM30 Output Transformer 30W

    MarshallTM 30 watt output transfomer. For JTM 30.

    		$107.95   Marshall JTM30 Output Transformer

    . .
    * We order transformers per order, please allow 7-10 business days for delivery *
    Make sure you know what transformer is right for you. Installation of the wrong transformer can severely damage an amp.
    The amount of power running thru a transformer is extremely dangerous. Always have installation done by a qualified technician.
  • ALWAYS MAKE SURE THE AMP IS NOT PLUGGED IN BEFORE ATTEMPTING REPAIR!
  • TUBE AMPS PRODUCE DANGEROUS AMOUNTS OF CURRENT
  • CAPACITORS CAN STORE ELECTRICITY AFTER THE AMP IS OFF
  • MAKE SURE CAPACITORS ARE DRAINED BEFORE ATTEMPTING REPAIRS

    * * IF YOU ARE NOT SURE SEEK OUT A QUALIFIED TECHNICIAN, HE'S A LOT CHEAPER THAN A FUNERAL! * *

    • Model Product Description Price . . Purchase
    Marshall Power Transformers     Top of Page
    GNJTM30PT-MAR Marshall JTM30 Power Transformer 30W

    MarshallTM 30 watt power transfomer. For JTM 30.

    		$119.95   Marshall JTM30 Power Transformer

    GNJTM45PT-MAR Marshall JTM45 Power Transformer

    MarshallTM power transformer. For JTM45.
    Mounting centers are 2-1/2" x 3-1/8"

    		$167.95   Marshall JTM45 Power Transformer

    GN9100PT-MAR Marshall JCM900 Power Transformer, 100W

    MarshallTM power transformer. For JCM900 100W.

    		 $191.95   Marshall JCM900 100 watt Power Transformer

    GN950PT-MAR Marshall JCM900 Power Transformer, 50W

    MarshallTM50 watt power transformer. For JCM900.

    		 $149.95   Marshall JCM900 50 watt Power Transformer

    GNP100PT-MAR Marshall JMP / JCM800 Power Transformer, 100W

    100 watt replacement power transformer for Marshall. Built to vintage specs with exact interleave ratios and materials. Great for upgrading later issue Marshall amps. Gives great classic sound. Good replacement for JMP and JCM800's. For EL34!

    		$135.95   Marshall JCM800 Power Transformer
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    GNP50PT-MAR Marshall JMP / JCM800 Power Transformer, 50W

    50 watt power transformer. Built to vintage specs with exact interleave ratios and materials. A good upgrade for later issue Marshall amplifiers. Good replacement for JMP and JCM 800's. For EL34!
    Mounting centers are 3.25" x 3.25"

    		$131.95   Marshall JCM800 Power Transformer

    Model Product Description Price . . Purchase
    Marshall Chokes     Top of Page
    GN800CT-MAR Geuine Marshall Filter Choke - JCM800

    MarshallTM filter choke for JCM800

    		$43.95   Marshall JCM800 Filter Choke

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