Tony Iommi — £2,500 · Premium Tone

• The Marshall DSL100H delivers power-tube saturation at master volume 6–7 — this compression and sag is what separates amp-driven tone from pedal tone. Set the master first, then dial back the channel gain to taste rather than the other way around.
• Tune down at least a half step (Eb) — C# for early Sabbath, D for later material
• Use the neck pickup for maximum thickness on riff-based parts
• Study "Iron Man" and "Black Sabbath" for the two defining Iommi riff archetypes
• The Rangemaster treble booster clips the upper midrange harmonics, adding a singing quality to single-note riffs that a modern overdrive pedal cannot replicate — modern equivalents include the Catalinbread Naga Viper and the Effectrode PC-2A, which aim to replicate the germanium transistor character
• Iommi lost the tips of two fretting fingers in an industrial accident and solved the reach problem by tuning down and using lighter strings than typical heavy metal players — if you play standard tuning with heavy strings, the riffs physically feel wrong because they were conceived on a lighter, lower-pitched instrument
• The tritone interval (b5 or #4 in scale terms) appears in nearly every Iommi riff as a tension point — practise power chord shapes that include the tritone (root + flat 5 below or above) across the fretboard in all positions to understand how he built menace into simple two-note shapes

• ✗Not exploring the Marshall DSL alone before adding pedals — a Les Paul or humbucker guitar into a British amp is already a near-complete overdrive system. Adding drive pedals on top is often unnecessary and muddies the amp's natural character
• ✗Scooping mids to compensate for the naturally mid-forward character — the midrange presence of an SG is the point. Removing it makes the guitar sound wrong for the style.
• ✗Using a distortion pedal to replace amp saturation — amp-driven tone has a specific feel (dynamics, touch sensitivity, natural compression) that pedal distortion cannot replicate. The source of gain matters.
• ✗Using single-coil pickups — the lack of output and mid-frequency push makes it impossible to achieve the tightness needed for high-gain rhythm playing.
• ✗Skipping the Tube Screamer-style boost — this pedal is not about adding gain. It focuses the low end before the amp sees the signal, which produces tighter palm mutes.

If you like Tony Iommi's tone, these players use a similar approach — same gear philosophy, comparable sound characteristics.