Marshall JH-1 Jackhammer (Ultra-Gain Overdrive)

397 kr. (including VAT @ 25%)

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Item on order with our supplier

This item has been ordered from our supplier, and we are currently awaiting delivery.

We will dispatch this product to you as soon as it is received from our supplier.

"Estimated delivery to you" is our estimate of when we will be able to deliver the product to you, based on our supplier's normal delivery timescales. If we become aware it is going to take significantly longer than normal to deliver this item, we will let you know, otherwise, we will advise by email or text message when the item has been dispatched from our distribution centre.

Estimated delivery to you: 16th November 2016

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1 year warranty and 30 day money back guarantee included

1 year warranty and 30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

All Products are new unless stated, and include a minimum of one year warranty.

Some items are only eligible for money back guarantee if they are returned to us unused and sealed in the original packaging, and in the case of software, unregistered. These items include:

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  • Earplugs and Ear Protection
  • Mouthpieces, Reeds etc… for Woodwind and Brass instruments
  • Mouth / Lip Care Products

We are unable to accept returns of any custom made items designed to work together as a unique package, such as computer system built to a customer’s personal specifications. Exceptions may only be possible with prior agreement of the vendor, and may be subject to a cancellation fee.

Product Ref: 21884

Marshall JH-1 Jackhammer (Ultra-Gain Overdrive)


Since they began in 1962, the Marshall name has been synonymous with high quality distortion tones. Initally, the way to get classic Marshall distortion was to naturally overdrive one of their valve amps by cranking it up to full volume. As time went by their Master Volume heads allowed the generation of more extreme levels of distortion as the pre-amp valves were driven into overdrive. Their first generation pedals simulated these various valve amp type distortions in convenient, cost effective stomp boxes. The Jackhammer is the next step on from previous Marshall distortion pedals.

Product Ref: 21884

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Full Description

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The pedal contains Marshall's most extreme distortion levels to date, combined with a Contour section that allows you to not only scoop out the mids, but also choose the frequencies at which the scoop occurs. This means that you can tailor your sound to your own individual requirements. Although the Jackhammer has more aggression and gain than any other Marshall pedal, we never forget our heritage. The sounds contained are always natural and realistic, like a super high-gain valve head pushed to the max.

Features / Specifications:

  • O/D and Dist mode switch
  • Volume / Gain control
  • Bass / Treble control
  • Contour Level / Contour Frequency
  • Solid metal casing
  • Passive bypass

Detailed Specs:

  • Power: 9V
  • Jack Sockets: Guitar Input, Signal Out / Bypass
  • Input Impedance: >1 MOhms
  • Output Load Impedance: <20 kOhms

Due to the technical nature of the Marshall Amplification products advertised on this page it is recommended that you contact us by telephone or by coming into our store to discuss your particular requirements and to arrange a demonstration before buying any of these products.