Two classic amps, two different voices. The Marshall Plexi is open, dynamic, lower-gain vintage; the Peavey 5150 is bright, aggressive, tight high-gain. Here is how their settings and the records made on them compare.
| Knob | Marshall Plexi | Peavey 5150 |
|---|---|---|
| Gain | 6 | 7 |
| Bass | 5.5 | 5.5 |
| Mid | 6.5 | 5.5 |
| Treble | 6.5 | 6.5 |
| Presence | 5.5 | 6 |
Averaged from 60 (Marshall Plexi) and 29 (Peavey 5150) famous recordings. Out of 10.
Go Marshall Plexi if you want open, dynamic, lower-gain vintage. Go Peavey 5150 for bright, aggressive, tight high-gain. 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.
🎛️ Get either amp’s tones on YOUR rig — free →Neither is "better" — they are voiced differently. Marshall Plexi is open, dynamic, lower-gain vintage; Peavey 5150 is bright, aggressive, tight high-gain. Pick by the tone you want, then adapt the settings to the amp you actually own.