The Ceriatone Plexi 50 1986 Bass 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. This amp is revered by tone enthusiasts (as is the "Experienced" for absolutely nailing the "Hendrix" sound). This amp has that fat, rich tone with single coils and a "brown" singing tone when cranked up. Sound great with 'buckers also guys!

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 an $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
Two Speaker Outputs|
External Bias Points
TAD Mustard Caps Standard

Plexi 50 1986 Bass Amp Configuration Options:

  • Chassis I - $806.50
    (Fully working chassis. Tubes not included.)
  • Chassis II - $889.50
    (Fully working chassis. Tubes included.)
  • Amp Head I - $961
    (Fully working chassis installed in a head cabinet. Tubes not included.)
  • Amp Head II - $1,033
    (Fully working chassis installed in a head cabinet. Tubes included.)
  • 112 Combo Amp - $1,164.50
    (Fully working chassis installed in a 112 combo cabinet. Tubes included. Speaker not included.)
  • 212 Combo Amp - $1,460
    (Fully working chassis installed in a 212 combo cabinet. Tubes included. Speakers not included.)

Main photo is for illustrative purposes only and 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. Ordering options for your amp may add several days to the build/lead time.

Ceriatone amps are Custom-built, hand made, hand wired amps, built to order. There is meticulous attention to detail that is second to none, and no shortcuts are taken. Each amp is 100% hand built, hand wired point to point, and then is thoroughly tested and burned in before it is shipped to you. For this reason it takes approx. 6-8 weeks for your amp to be built and shipped. Options can add 1-2 weeks to the "standard" build time.

Prices 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 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 1986 Bass

  • $806.50

Available Options

Tags: plexi, 50, 1986 bass, amp, ceriatone, marshall