Park/Marshall Plexi 150 Lead 1969

200-Watt KT88 Tube Electric Guitar Amplifier Head.
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Park/Marshall Plexi 150 Lead 1969

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  • $7,700.00
  • $6,500.00

The Richard Fortus Collection

"Plugging into this amp is life changing.  Plugging in a couple of vintage 4x12’s and hitting a chord causes the earth to shift just a bit on its axis.  It’s unlike anything else.  This is heaviest, most brutal tone ever.  Sounds like a plexi Super Lead but harmonically, an octave lower.  A friend compares it to John Lord’s B3.  Just massive.  

This is a plexi Marshall, but with a unique circuit.  It’s a cross between a Major and a Super Lead.  It has 4 KT88’s but with 5 (yes, 5), preamp tubes.  So like the power amp section of a Major, but with a. Plexi preamp in front of it and an additional extra preamp stage.  Super Leads and Super Bass plexi’s have 4 preamp tubes.  Majors only had 3.  Richie Blackmore had an extra preamp tube stage added to his Majors, the 150 takes it a step further.  The 150 sounds different to a Super Lead, with more clean low thumpy low end and more 3 dimensional.

These black plexi 150’s with the offset handle are incredibly rare.  The chrome paneled 150’s are more common.  The plexi version is different.  This is truly a unique beast.  The transformers are huge and the plate voltage is very high.  The current trend towards smaller amps is understandable.  Most people don’t have the ability to crank 180 watts in their home studios.  I love the sound of 4 KT88’s.  There’s nothing like it.  What i do with these amps is to run one 4x12 and the other side i run in to a UA OX.  Or you can run the entire load on to a Fryette Power Load.  This amp can go from super 3d fat clean to absolutely ferocious when cranked.  There is no other amp like it.  "  - Richard Fortus
  • Listing price does not include shipping and insurance costs. Please contact us for shipping options.
  • There are no returns on items in this collection, so please contact our sales team with any questions you may have before purchasing, as well as to discuss international shipping options.
  • All items from the Fortus Collection will include a hand signed certificate of authenticity that will be mailed individually.

Head/Combo/Cabinet: Heads

Amp Electronics: Tube Amp

Wattage Range: 200-499 Watts

Power Tubes: KT88

Tube Details: 12AX7 (x4), KT88 (x4)

Amplifier Condition: Amplifier is in good condition with light wear from age and use.

Amp Mods/Repairs: New filter caps along with metal film bleed resistors, an IEC power receptacle has been installed, new bridge rectifier, new capacitors in the bias circuit. A slave out jack still remains in back panel but has been removed from circuit.

Serial Number: 5056

Amp Details: Amplifier is mostly original with many untouched solder joints, factory components, and original transformers, tube sockets, and wiring. The listed modifications we done for safety and reliability, and circuit has remained stock. The amp had a slave out installed at one point, but it has been disconnected. Original GEC KT88 output tubes test strong. Tested November 18th, 1969. This amp is currently set up for 240v operation, but can be converted to 115/120v.

You read that right! Any orders over $49 ship for free!*

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Most orders ship the same or next day:  
We greatly appreciate your patience, and are working hard to fulfill all requests as quickly as possible, while practicing recommended safety guidelines.

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Please don't hesitate to reach out to, or call us directly at 773-525-7773.

*Special exceptions do apply.



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3316 N Lincoln Avenue Chicago, IL 60657

We're right off the CTA Brown Line 'Paulina' Stop Just North of Belmont and just West of Ashland.

We’re all musicians here at Chicago Music Exchange and we want you to love the gear you get from us. We understand that sometimes you get a piece of gear that doesn’t work out for you. That’s why we offer an easy return policy to take the stress out of purchasing from us.

If you decide you'd like to return an item, please contact your Sales Rep, chat us, or give us a call.

If you placed your order on Amazon or eBay, we advise issuing the return request from your account on the platform of purchase - our Customer Service team will process a refund upon receipt of the item(s).

Most new items may be returned within 30 days of delivery and most vintage & used items may be returned within 3 days of delivery for a full refund, exchange, or store credit. Please pack the product safely for the journey back to us. If the product was shipped for free, the charge will be deducted from refund, unless the reason for the return is outside normal circumstances.

Please contact us as soon as possible if your order was received incorrectly, damaged, or defective. Most times we will give you an RA number (Return Authorization). Why is that number important? This will allow us to speed up the process of the return.

We reserve the right to charge a restocking fee based on the return condition. Some items we just can’t take back for returns, due to a one time function like strings or drums heads and other times it’s not sanitary to do so with microphones or harmonicas. If you aren’t sure if what you bought falls into a category like this, call us (773) 525-7773!

We strive to get your return processed quickly. Most of the time we have it done within two business days. Funds going back to credit cards usually takes two to four business days. CME strives to make sure all customers are happy with their experience. It is our priority to provide great service along with great gear. We always want to be helpful, and open to your feedback. Please let us know your thoughts! If you have any questions, we’re here for you!

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