1. Metalhead Famous Gain Modification

An extra tube is added to your Amp and an extra two gain controls to drive your Amp to a new limit

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2. Active Tube Effect Loop

Add an extra tube to your Amp. This modification was specially designed as active tube circuitry to drive your effects without any gain or sound quality loss.

3. Bass Boost

Gives your Amp the most fatness richness and ballsiest sound you ever heard.

4. Channel Switching

Switch your Amp between clean and overdrive sound. Metalhead famous Extra Gain Modification must be installed first.

5. Line In

This modification will give you direct access to the power section of your amp. You can then plug an external Pre-Amp and use your Marshall as a tube power Amp only.

6. Line Out

This modification will separate the Marshall pre-Amp from the power Amp section so you can tap your Marshall Amp to another power Amp without losing your Marshall unique sound and tone.

7. Metalhead Pee-Cup Noise Reduction

Our Noise Reduction is unique and eliminates feedbacks and noises due to the extremely high gain, sustain and overdrive. Perfect for Industrial Metal music players. You must have our Extra Gain Modification installed first.

8. Master Volume 1

Install a master volume in a four inputs Marshall Amp.

9. Master Volume 2

This master volume will work on any Amp and will create a great sweet warm sound when it is set to low volume apartment playing level.

10. Marshall MK-II to JCM 800 Conversion

This modification will convert your Amp from the low gain 4 inputs MK-II model to the JCM 800 two input higher gain Marshall.

11. 100 Watts to 50 Watts Conversion

This will convert your 100 Watts Marshall to a 50 Watts Amp for a better sounding guitar tone just by flipping a switch when needed.