Freezing moon amp settings — Yamaha Ga15

The Mayhem guitar tone for “Freezing moon”, dialed in for a Yamaha Ga15 with a Yamaha EG 112C. Studio version, De Mysteriis Dom Sathanas (1994) — Euronymous's final recordings

Original rig

Marshall JCM800 (scooped, high gain), Gibson Les Paul Custom with stock humbuckers, Boss HM-2 Heavy Metal pedal stacked into amp distortion, Boss SD-1 as boost, Boss DD delay for atmospheric parts

Thin, brittle, icy black metal distortion — trebly and raw with minimal low-end warmth, chainsaw-like saturation

Amp settings — Yamaha Ga15

Knob	Setting (0–10)
Gain	10
Bass	2
Mid	3
Treble	10
Presence	0
Reverb	0
Master	7

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Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01Mooer GE150 — HM-2 Model (Heavy Metal / 'Metal Dist' block)

Select the HM-2 or 'Metal DS' model in the GE150's distortion block — this is the core of the tone. Stack this INTO the Yamaha's gain, not over a clean channel.

Dist/Drive 10 · Level 8 · Low EQ 3 · High EQ 10

02Mooer GE150 — Overdrive Block (SD-1 / Tube Screamer style)

Place BEFORE the HM-2 block in chain to tighten the low end and add bite — Euronymous stacked an SD-1 for extra push

Drive 3 · Tone 7 · Level 7

03Mooer GE150 — Digital Delay Block

For the atmospheric cold delay on lead sections — keep mix low, this is background texture not slapback

Time 5 · Feedback 2 · Level/Mix 3

04Mooer GE150 — Noise Gate Block

Essential at these gain levels to keep palm mutes tight and silence between riffs dead quiet

Threshold 6 · Decay 3

Why these settings

The Yamaha GA15 is a basic solid-state practice amp with limited EQ range, so we compensate by maxing treble and cutting bass harder than the original JCM800 settings. The GE150's HM-2 model does the heavy lifting here — the amp provides clean-ish headroom while the pedal delivers the chainsaw texture. Your Yamaha EG 112C has lower-output single-coil-sized humbuckers vs Euronymous's full Les Paul humbuckers, so gain stays maxed to compensate for the output difference.

PRO TIPPick directly over the bridge pickup with the fleshy part of your palm barely touching the strings for that percussive, clicky black metal attack — Euronymous's tone comes as much from aggressive downpicking technique as gear. Angle your pick sharply for maximum treble scrape.

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