Two classic amps, two different voices. The Soldano SLO is smooth, singing, saturated high-gain lead; the Marshall JCM800 is midrange-forward 80s rock crunch. Here is how their settings and the records made on them compare.
| Knob | Soldano SLO | Marshall JCM800 |
|---|---|---|
| Gain | 6 | 6.5 |
| Bass | 5.5 | 6 |
| Mid | 6 | 6 |
| Treble | 6.5 | 7 |
| Presence | 5.5 | 6 |
Averaged from 5 (Soldano SLO) and 84 (Marshall JCM800) famous recordings. Out of 10.
Go Soldano SLO if you want smooth, singing, saturated high-gain lead. Go Marshall JCM800 for midrange-forward 80s rock crunch. 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. Soldano SLO is smooth, singing, saturated high-gain lead; Marshall JCM800 is midrange-forward 80s rock crunch. Pick by the tone you want, then adapt the settings to the amp you actually own.
Averaged across the famous recordings on each (knobs out of 10), the Soldano SLO sits at gain 6, bass 5.5, mid 6, treble 6.5, presence 5.5; the Marshall JCM800 at gain 6.5, bass 6, mid 6, treble 7, presence 6. The biggest gap is gain, where the Marshall JCM800 runs noticeably higher.
Notable Soldano SLO tones include Soulshine, Heavy Fuel (Live Album Version), Barracuda. Notable Marshall JCM800 tones include Master of Puppets, Fade to Black, Mayonaise. GuitarToneAdapt can re-dial any of them onto the amp and guitar you already own, free.