The Ceriatone Plexi 50 1987 Lead 50 watt amp is the namesake of the fabulous Marshall Plexi amps. Although designed originally in the mid 60's, they gained the most notoriety in the 80's and early 90's. 

Available in 5 different circuit versions, '67, '68, '69, '70, '73.

The earliest Plexi 100s were actually those that had the same front panel as the JTM 45, and are known as the JTM 45/100 heads. What differentiates these between the later JMP plexi Marshalls is the fact that they employed very large transformers and the filter caps for the power supply were all placed underneath the chassis. All Marshalls during this era were hand-wired point to point with no printed circuit boards.

The larger transformers and high plate voltages applied to the earliest 100 watt plexis meant that they had a lot more headroom, were very loud, and also wore down tubes fairly hard. JTM and MK II issue 100 watt lead and bass amplifiers can be thought of as basically louder versions of their smaller JTM 45 cousins. These amps were produced in ’66-’67 and are the most expensive of the range. Again, they were available in lead and bass versions that were somewhat similar, many of the smaller differences disappearing after the volume was cranked up.

Note: PPIMV mounted on Front Panel will be either mounted in place of pilot lamp (Marshall styles) or a hole will be drilled (OTS styles).
          PPIMV mounted on Rear Panel will always be in place of a Speaker Output Jack.

Check out using 6550's instead of EL34's. We can install 6550's instead of EL34's for a $50 upcharge.

Two Channels / 4 Inputs (High / Low for each channel)
Power: 50 watts
2 x EL34, 3 x 12AX7
4/8/16 Ohm Selectable
1/2 Power Switch Standard
Passive Effects Loop
Push/Pull Bright Switch On Bright Volume
Two Speaker Outputs
External Bias Points
TAD Mustard Caps Standard

Plexi 50 1987 Lead Amp Configuration Options:

  • Chassis I - $791.50
    (Fully working chassis. Tubes not included.)
  • Chassis II - $863.50
    (Fully working chassis. Tubes included.)
  • Amp Head I - $982
    (Fully working chassis installed in a head cabinet. Tubes not included.)
  • Amp Head II - $1,054
    (Fully working chassis installed in a head cabinet. Tubes included.)
  • 112 Combo Amp - $1,196.50
    (Fully working chassis installed in a 112 combo cabinet. Tubes included. Speaker not included.)
  • 212 Combo Amp - $1,514
    (Fully working chassis installed in a 212 combo cabinet. Tubes included. Speakers not included.)

Main photo is for illustrative purposes only and base pricing is for Chassis I. Photos may include options that are not included if you order the standard version of the amp or don't order all options available. We also may not offer all options available and/or shown in main illustrative photos. Photos are of products assembled by Ceriatone. We no longer sell kits. You must order all kits direct from Ceriatone Malaysia.

Ceriatone amps are custom made, 100% hand-built, point to point hand-wired amplifiers. Each amp is thoroughly tested and burned in before it is shipped to you. For this reason, the build lead time is approx. 11-14 weeks for custom hand-built amplifiers and 5-10 days for pedals and buffered effects loops.

Pricing shown on includes the shipping cost to the USA only. We only ship to the USA, Canada and Mexico. Shipping to Canada, Mexico, Puerto Rico and the US Virgin Islands will have additional shipping. We'll invoice the difference in shipping and it is due at the time the order is placed.

Note: We ONLY ship to PayPal verified addresses if paying via PayPal. No exceptions.

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Plexi 50 1987 Lead

  • $791.50

Available Options

Tags: plexi 50, 1987 lead, marshall, ceriatone, british tone