Cornell Plexi 7 Head

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Cornell Plexi 7 Head

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EL84 Boutique Tube Amplifier


Most of today’s guitarists are aware of some amplifier history, and “Plexi” must be one of the best known nicknames for a range of amplifiers produced by Marshall from about 1963 to 1969. We have refined this fundamental design to its ultimate, tailoring the components and adjusting the circuit to produce the definitive Plexi sound.


The Cornell Plexi 7 Head is a superb addition to the Cornell-plexi range. It will give you that quintessential plexi ‘Jimi’ sound through almost any cabinet, and is small enough for your bedroom. It is portable enough to sit on the back seat of your car and be taken to a rehearsal or studio and maybe hooked up through one of their cabinets. With a miked up cab, you can even gig with it.

With this classic British circuit as its starting point, Denis has captured perfectly the plexi panel classic rock tones of the 60’s.

Don’t be fooled by its small size though…the mighty 7 Watts of valve tone may still be too much for your neighbours.

To combat this, you can switch the output down in steps from 7 Watts to 1+1/2 Watts, 1/4 Watt or even 1/8th of a Watt!

You will still get incredible output valve distortion, but at tiny volume.



Hi input (2.2 MΩ)

Controls: Volume,Treble, bass,edge


Push Pull switch on volume operates EQ cut (bypass for the tone controls)


Valve Complement:

2 x ECC83

1 x EL84


Output Switch:


Power A-B-C-D

A - 7 watts

B - 1.5 watts

C - 0.25 watt

D - 0.05 watt


Mains On/Off


Single ended class A Cathode bias


Speaker output (1/4 inch jack socket) 8 ohm output


Weight:19lbs (8.6kgs)


Width: 368 mm, 16.5inch Height: 250mm, 9.75inch Depth: 197 mm, 7.75 inch

Additional Information

Additional Information

Model Cornell Plexi 7 Head Amplifier
Power (W) 7

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