Tone library / Deep Purple / Demon's Eye

Demon's Eye amp settings — Nux Mighty 40 BT MKII

The Deep Purple guitar tone for “Demon's Eye”, dialed in for a Nux Mighty 40 BT MKII with a Epiphone ES 339. Studio version, Fireball album (1971)

Original rig

Ritchie Blackmore used a 1968 Fender Stratocaster with a scalloped fretboard into a Marshall Major 200W head driving 4x12 cabs, cranked for natural tube breakup. Aiwa TP-1011 tape recorder used as a preamp boost for extra grit and compression. Hornby-Skewes Treble Booster in front for lead tones.

Grinding mid-forward crunch with aggressive pick attack, vocal-like sustain, and that signature early 70s British hard rock bite

Amp settings — Nux Mighty 40 BT MKII

CHANNELPlexi model (or closest Marshall-voiced high-gain model)BRIGHTonBOOSToff

Knob	Setting (0–10)
Gain	7
Bass	4
Mid	7
Treble	6
Presence	5
Reverb	0

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Guitar

PICKUPbridge TONE7 VOLUME10

Signal chain

01NUX MG-30 - Treble Booster block

Enable a Treble Booster or Rangemaster-style block before the amp model to replicate Blackmore's Hornby-Skewes boost

Level 6 · Tone 7

02NUX MG-30 - Tape Saturation/Compression block

Optional - replicates Blackmore's Aiwa tape recorder preamp trick for added compression and grit

Drive 4 · Level 6 · Tone 5

Why these settings

Your ES-339's humbuckers are darker and fatter than Blackmore's Strat single coils, so treble is dropped from what a Strat would need and mids stay high to preserve that aggressive bark. The Mighty 40 BT's Plexi-style model gets you in the ballpark, but you need the treble booster block from your MG-30 running into it to nail the sizzling top-end cut Blackmore got from his Hornby-Skewes unit.

PRO TIPBlackmore's pick attack is essential to this tone—use a heavy pick, strike the strings hard near the bridge, and dig in aggressively on accents. His vibrato was wide and fast, almost violin-like. Roll your guitar's volume to 7-8 for the verses to clean up slightly, then full up for the solo sections.

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These settings are for a Nux Mighty 40 BT MKII. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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Song, artist and gear names are used to identify the tone being matched; ToneAdapt is not affiliated with or endorsed by the artists or manufacturers mentioned. Settings are AI-generated starting points — trust your ears.