How do I date Marshall?

Starting in July 1969, Marshall starting using official serial codes. They were initially broken down into three parts: the model code, the serial production number and the date code. Marshall used letters as a date code to represent year of production. Its important to note that, prior to 1984, this letter came last.

What is the Marshall amp sound?

Their signature sound, characterized by sizzling distortion and crunch, was conceived by Marshall after guitarists, such as Pete Townshend, visited Marshalls drum shop complaining that the guitar amplifiers then on the market didnt have the right sound or enough volume.