Tone library / Rage against the machine / Testify

Testify amp settings — Boss ME-50

The Rage against the machine guitar tone for “Testify”, dialed in for a Boss ME-50 with a Washburn Wi18. Studio version, The Battle of Los Angeles (1999) - Main drop D riff

Original rig

Marshall JCM800 2205 (50W Boost channel) + Peavey 4x12 (Celestion G12K-85) + 1982 Fender Telecaster (neck pickup) / Les Paul + Dunlop Cry Baby + DigiTech WH-1 Whammy + Boss DD-3

Aggressive, mid-heavy British crunch with high gain saturation and tight low end in Drop D

Amp settings — Boss ME-50

CHANNELBoss ME-50 Master / Lead section (Stack OD/DS mode)BOOSToff

Knob	Setting (0–10)
Gain	0
Reverb	0
Master	7

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Guitar

PICKUPneck TONE10 VOLUME10

Signal chain

01ME-50 Tone Modify / EQ

Set Type selector to Fat to recreate Morello's maxed-bass JCM800 EQ

Type (Fat / Presence) 4 · Resonance 6 · High 7 · Low 9

02ME-50 OD/DS Section (Amp Distortion Model)

Select 'Stack' or 'Lead' mode to capture the Marshall JCM800 2205 drive channel

Type (Lead/Stack) 6 · Drive 8 · Bottom 8 · Tone 6 · Level 7

03ME-50 Expression Pedal (Wah / Whammy)

Use Wah mode for intro sweeps; set to +1 Oct/Pitch mode for solo and noise sweeps

Mode (+1 Oct / Wah) 1

04ME-50 Delay Section

Engage for the iconic slapback intro rhythm texture

Time (Short / Slapback) 2 · Feedback 2 · Level 4

Why these settings

Morello's core tone uses a JCM800 2205 Boost channel with Bass and Mids set to 10 and Treble at 7. On the Washburn Wi18's humbuckers, using the ME-50's Stack OD/DS engine with the Tone Modify set to Fat delivers that thick, punchy low-mid wallop without turning muddy. The neck pickup position matches the original Telecaster neck pickup tracking on the main drop D riff.

PRO TIPTune down to Drop D (D-A-D-G-B-E) and pick aggressively right next to the bridge saddles on the neck pickup to combine deep fundamental low-end with sharp percussive attack.

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

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