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.
How to read the bar code Ignore the bar code on the first line.
1979-1981: Some Marshalls made from 1979 to 1981 have the serial number on the front panel.
Some of the older amps have an inspection sticker on the top of the chassis and they usually have the day, month and year the amp was made or inspected.
Note: "A" Date Code: The "A" Date Code ran for 18 months (July 1969 - December 1970) so the "B" Code was not used.
Z was used for two years, allowing time to convert to the bar coding scheme started in October 1992.
Using the information in this section, you can attempt to dial in the possible dates of manufacture more closely than by sheer estimation alone.
From July 1969 to December 1983, the letter denoting the year was put after the serial number.
For example: S/ 15679 E S/ would indicate the model which is 50 watt 15679 is the serial number E indicates the year 1973 From January 1984 to October 1992 the date code letter was put before the serial number.How to read the bar code Ignore the bar code on the first line. Note that some models produced from 1979-81 had serial numbers stamped on the front panel (to the left of the power switch).How to read the serial number (1969-1983)Marshall used a coding system that provided (a) model, (b) serial number, and (c) manufacture date.Defined as a ‘repeated musical phrase’, guitar riffs are usually instantly recognisable, easy to remember, and set the tone for the song.Regularly credited as the DNA behind rock and roll, we delve into what goes into some of our favourite riffs of all time, how they have evolved, and if there’s still a place for riffs in today’s tunes.Specializing in guitar & amplifier repairs and restorations in New Jersey.