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Spline Laboratories Cathedral

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Page last updated Jun 06, 2026

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Description

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Spline Laboratories Cathedral Designed to meet the discerning needs of producer and guitarist Josh Ang, CATHEDRAL is the sound of Josh's latest project Pincer+ CATHEDRAL is Spline Laboratories evolution of the legendary Hyperfuzz - fine tuned for metal and hardcore. Three pedal modes give a huge number of tonal options including two fuzz voices and an overdrive. Turn up the GLARE to get the Pincer+ sound, adding in a gnarly gated octave-up. In the studio and live, Josh uses BLEND to mix in the perfect amount of CATHEDRAL rip with his core distortion sounds. GLARE: Adds in a nasty octave up. GLARE naturally gates your signal the more you turn it up. Crank GLARE to get the Pincer+ sound. Turn GLARE down for classic Hyperfuzz tones. LEVEL: Over 20dB of boost at your fingertips, push your amp to the limit for even more saturation. MODE: Up: Screaming upper-mid fuzz voicing. Center: GLARE overdrive mode. Down: Crushing lower-mid fuzz tones, for classic doom and sludge sounds. GAIN: Turn up for more texture and compression, utilizing synthetic germanium technology. SHAPE: Active EQ with a custom sweep. Turn up all the way for full-bore destruction. Dial back to tighten up your highs & lows. BLEND: Dry guitar signal blend - when turned up all the way, you will be hearing only your dry guitar tone. Dial back to hear more CATHEDRAL.

Product specs

Power	9V
Bypass	true bypass
Analog/Digital	analog

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Boring Gear Reviews

This One RIPS! Spline Laboratories Cathedral

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Spline Laboratories Cathedral.

Features and functionality

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The boost mode may not significantly alter tone, even with shape and glare knobs maxed, potentially indicating a defect.
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Lower output and more splattery sounds are achieved in fuzz modes with high glare and shape settings.
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Use cases and applications

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Stacking the Cathedral with a muff pedal enhances its performance, particularly in the middle mode.
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The pedal's mid mode bypasses the fuzz circuit, focusing on high mids without significant tone alteration.
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Comparisons

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The Cathedral's boost mode is compared to an HM-2 chainsaw sound but may not deliver as expected without stacking.
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Guitarist

Sleep Token

Verified via Photo

In this photo from IV's Instagram account story, we can see an updated pedal rack, adding onto IV's Neural DSP Quad Cortex, a Electro-Harmonix POG 3 Polyphonic Octave Generator Pedal, a REVV G3 Purple Channel Distortion Pedal, a Spline Laboratories Cathedral Fuzz + Boost pedal, and a Tallon Electric The Noise Pedal, inside a Konvikt Kustoms Auto Switching Redundancy System Rig

Jesse Doreen

Guitarist

Counterparts

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During Counterparts' Audiotree performance, a clear view at 18:22 in the video reveals that guitarist Jesse Doreen uses the Spline Laboratories Cathedral pedal.