The JCM800 and JMP are both guitar amplifiers made by Marshall. They are both considered to be classic Marshall amplifiers and have been used by many famous guitarists throughout the years.
However, there are some key differences between the two amplifiers.
The JCM800 is a high-gain, all-tube amplifier. It was first introduced in 1981 and quickly became a popular choice among guitarists for its powerful, crunchy distortion and tight, responsive low end.
The JCM800 is known for its aggressive, high-gain sound and is often associated with heavy metal and hard rock music. The amp is also known for its versatility, it can be used for blues, country, or classic rock sounds as well.
On the other hand, the JMP (which stands for “Jim Marshall Productions”) is a series of amplifiers that has been in production since the 1960s.
The JMPs are considered to be more vintage-sounding than the JCM800. They feature a more classic, bluesy tone with a smoother, more rounded distortion. The JMPs are also known for their rich, warm clean tones.
In a nutshell, the main difference between the JCM800 and JMP is the tone, the JCM800 is known for its high-gain, aggressive sound, while the JMP is known for its vintage, bluesy tone.