Marshall 100 Watt all-valve JCM900 head (3x ECC83s, 4x 5881s)

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Brand: Marshall
SKU: M-4100-U


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The Marshall Amplification JCM900 was the next evolutionary step on from the JCM800. The 4100 is a precise reissue of the JCM900, first launched in the early 1990s.

This high gain, dual reverb, all-valve 100 Watt head is still a players’ favourite. Known for its tone and workhorse roadworthiness, the JCM900 4100 has many fans due to its feature set and versatility.

Channel A is voiced to be sparklingly clean on lower gain settings, building to a raunchy crunch when driven harder. Channel B takes the gain higher producing tones from silky smooth distortion to searing, saturated scream.

The JCM900 4100 is equipped with a series FX loop with its own level control for use with rack FX or stomp boxes.

Marshall JCM900 4100 Specifications:

  • Model: JCM900 4100
  • Range: Vintage
  • Technology: Valve
  • Channels: 2
  • Wattage: 100w
  • Inputs: 1
  • Controls: Presence, Bass, Middle, Treble, PreampX 2, Master X 2, Rev X 2
  • Pre Amp Valves: 2 X ECC83
  • Power Amp Valves: 1 X ECC83, 4 X 5881
  • Footswitch: Yes
  • Cables: Power/Speaker
  • Weight: 18.8 kg
  • Dimensions (WxHxD): 750 x 310 x 210 mm
  • Effects: Reverb
  • Effects Loop: Yes
  • Master Volume: Yes
  • Pentode/Triode Switch: Yes


Why buy from Melody Music Shop, LLC?

Located in Bloomington, Indiana, Melody Music Shop strives to maintain a diverse, high quality inventory along with exceptional customer service. We carry a wide range of instruments and accessories, including new and used guitars, band and orchestral instruments, pianos, amps, sound systems, and so much more!

With certified technicians on staff and a century + of experience between them all, you can rest assured any instrument you purchase from Melody Music Shop LLC is in the best condition possible! Our ENTIRE STORE is maintained at 50% humidity year round per manufacturer’s stringent requirements. All items will be packaged carefully to ensure their safe arrival. Guitars will have their string tension lowered and packaged to manufacture specs or better. Melody Music Shop LLC guarantees quality products, fast shipping, and top-notch customer service!

Please contact us if you have any questions!

Layaway is an option!

  • Layaway items require an initial down payment of 25%.
  • Layaway items can be held here for up to 90 days.
  • A payment of 25% (or more) is due on the 30th, 60th, and 90th day from the layaway start date (although payments may be made before the scheduled due date).
  • The item will ship immediately following payment in full, which may be before the 90 day layaway period.
  • There are no returns on layaway items. There are no refunds of payments towards a layaway item.
  • Please contact us with any further questions regarding our layaway policy!


Items purchased from our store will ship out within 1 business day of receiving payment. FedEX Ground or Home Delivery, fully insured, will be used for shipping instruments and large items. Items over $200 will require a signature. Accessories and other small items will be shipped via USPS Priority Mail.



We accept PayPal and will only ship to confirmed ship-to addresses listed on the PayPal account.

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We accept Visa, Discover, Mastercard, and American Express. The shipping and billing address must match in order for us to ship the item to that address.

Payments via Reverb are safe and secure too!

Thank you for looking 🙂

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