One amp settings — Katana 50 gen 3

The Metallica guitar tone for “One”, dialed in for a Katana 50 gen 3 with a Jackson JS32T AH Kelly. Studio version, ...And Justice for All (1988)

Original rig

Mesa/Boogie Mark IIC+ head, ESP MX-220 with EMG pickups, no pedals for the heavy sections

Tight, scooped, aggressive rhythm with sharp pick attack and minimal low-end bloom

Amp settings — Katana 50 gen 3

CHANNELBrownBOOSToff

Knob	Setting (0–10)
Gain	8
Bass	6
Mid	2
Treble	8
Presence	6
Reverb	0
Master	4

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Guitar

PICKUPbridge TONE10 VOLUME10

Why these settings

The Katana's Brown channel emulates the tight, focused gain structure closest to the Mark IIC+. I've kept mids at 2 (scooped, matching the Justice-era sound) but raised bass +1 from the original because your Jackson's passive humbuckers have less low-end push than Hetfield's active EMGs. Treble stays high at 8 for that razor-sharp pick articulation. The original recording is bone-dry, so reverb is 0.

PRO TIPUse aggressive downpicking with your pick angled slightly toward the neck—Hetfield's signature attack comes from consistent, hard downstrokes that dig into the string, not from extra gain.

Get this tone on your amp

These settings are for a Katana 50 gen 3. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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More tones for the Katana 50 gen 3

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