Tone library / Belphegor / Swarm of Rats

Swarm of Rats amp settings — Boss Katana Air

The Belphegor guitar tone for “Swarm of Rats”, dialed in for a Boss Katana Air with a Ibanez GRG131DX-BKF Superstrat. Studio version, Goatreich – Fleshcult (2005)

Original rig

Peavey 5150 / 6505 head, ESP/LTD with EMG 81 pickups, Boss NS-2 Noise Suppressor, no notable drive pedals (amp saturation only)

Tight, aggressive blackened death metal crunch with scooped mids, cutting high-end rasp, and controlled low-end thump

Amp settings — Boss Katana Air

CHANNELBrownBOOSToff

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

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Guitar

PICKUPbridge TONE10 VOLUME10

Why these settings

The original 5150 tone is mid-scooped and tight by design. The Katana's Brown channel approximates this Marshall-on-steroids voicing well. Gain at 7 reaches the saturation without mud—the 5150 saturates early so don't push higher. Mid at 4 preserves the scoop while keeping note definition; your Ibanez humbuckers are passive and slightly darker than EMGs, so treble and presence stay assertive to retain the rasp.

PRO TIPPalm-mute hard and pick close to the bridge for that percussive attack Helmuth uses—the tight low-end on this tone comes as much from right-hand technique as from gear.

Get this tone on your amp

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

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More tones for the Boss Katana Air

Unholy ConfessionsAvenged Sevenfold G.O.A.T.Polyphia Left BehindSlipknot unhappy (slowed)s0rrow Highway to HellAC/DC Sweet child o mineGuns n roses

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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.