Psycho Holiday amp settings — Randall RG15XM

The Pantera guitar tone for “Psycho Holiday”, dialed in for a Randall RG15XM with a Dime guitarz Culprit. Studio cut, Cowboys from Hell (1990) — main rhythm tone

Original rig

Randall RG-100ES solid-state head, Dean ML with Bill Lawrence L-500XL humbucker, Furman PQ-4 parametric EQ, MXR 6-Band Graphic EQ (smile curve, boosting highs/lows)

Tight, scooped, razor-sharp high-gain rhythm with surgical midrange cut and searing harmonic overtones

Amp settings — Randall RG15XM

CHANNELOverdrive Channel (Gain Boost engaged)BOOSTon

Knob	Setting (0–10)
Gain	9
Bass	8
Mid	2
Treble	9
Master	5

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Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01MXR 6-Band Graphic EQ

RECOMMENDED — not currently owned (run in front or loop to nail Dimebag's surgical pre-clip bite)

100Hz 8 · 200Hz 7 · 400Hz 4 · 800Hz 3 · 1.6kHz 7 · 3.2kHz 9

Why these settings

The Randall RG15XM shares the solid-state clipping lineage of Dimebag's iconic RG-100ES, so engage the Gain Boost and push the overdrive gain to 9 for maximum harmonic saturation. Deeply scoop the onboard midrange knob to 2 while keeping bass at 8 and treble pushed to 9 to replicate the extreme smile-curve EQ from his Furman and MXR units on this smaller practice speaker. To reach his exact razor-sharp bite without fizz, adding an MXR 6-Band EQ pedal is the ultimate upgrade path.

PRO TIPDig in hard using heavy gauge picks (1.0mm+) with aggressive palm-muting right against the bridge saddles to get that percussive, mechanical attack unique to Dimebag's solid-state tracking.

Get this tone on your amp

These settings are for a Randall RG15XM. 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.