Marshall began using a nine-digit bar code label beginning in 1992. If your amp or speaker enclosure sports a black-ink-on-white-background barcode label on the chassis or back of the cabinet, then you know that the product was manufactured somewhere between 1992 and the present. This (a)(b)(c) sequence began in 1969 and was valid through 1983.How to read the serial number (1984-1992) In 1984, the order of the serial number components changed to (a)(c)(b), but the method used to determine the values for (a) and (c) remain the same.1979-1981: Some Marshalls made from 1979 to 1981 have the serial number on the front panel.July 1969 - December 1983 EXAMPLE: SL/A 24523 D SL/A = Model Code 24523 = Serial Number E = Date Code This amp would have be a 100 Watt Super Lead 1972 January 1984 - October 1992 EXAMPLE: S/A T 24523 S/A = Model Code T = Date Code 24523 = Serial Number This ampwould have be a 50 Watt 1985 JCM900's The JCM900's began using a Bar Code system which consists of 9 digits which are broken down into three sections.That isn’t such an easy question to answer because the various Marshalls over the years have been really each optimized for particular types of tones and guitar types and have changed both due to the tastes and demands of musicians as well as for cost or manufacturing reasons.We’ll cover that and cover in general what seems to work the best to maximize a particular Marshall.
If you have any questions or want make a purchase please call our shop, drop us an email or buy a Marshall Amp or Head online.
We've had everything from a Super Lead Plexi and Super Tremolo to JCM 800's in our shop.
We try to always have a couple of vintage Marshall Heads or combos on hand.
This system was used until 1992, when a bar code system was introduced.
(a) Model - The first part of the serial number grouping determines the model of the chassis. (b) Serial number - The second part of the alphanumeric grouping is the five-digit serial number itself.