Two classic amps, two different voices. The Marshall JCM800 is midrange-forward 80s rock crunch; the Marshall Plexi is open, dynamic, lower-gain vintage. Here is how their settings and the records made on them compare.
| Knob | Marshall JCM800 | Marshall Plexi |
|---|---|---|
| Gain | 6.5 | 6 |
| Bass | 6 | 5.5 |
| Mid | 6 | 6.5 |
| Treble | 7 | 6.5 |
| Presence | 6 | 6 |
Averaged from 59 (Marshall JCM800) and 31 (Marshall Plexi) famous recordings. Out of 10.
Go Marshall JCM800 if you want midrange-forward 80s rock crunch. Go Marshall Plexi for open, dynamic, lower-gain vintage. But the real point: you do not need either one. GuitarToneAdapt takes any tone recorded on these amps and re-dials it for the amp and guitar you actually own — free.
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