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Brimstone Audio Crossover XD-1 Distortion Pedal

Brimstone Audio Crossover XD-1 Distortion Pedal

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Page last updated Feb 13, 2026

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The XD-1 is light but sturdy, and requires a bit more space on the pedal board. The Mix knob sets the balance between High and Low Band volume. The X Freq knob sets the crossover frequency point, and the Master sets the final output volume. On the Low Band side of the unit there are Gain, Boost, Thump (sub low-frequency enhancement), and Filter (for lower mids below crossover point).

On the High Band side there are Gain, Boost, Mid, and Treble. The rear of the unit offers inputs and outputs as well as a Lo-Gain/Hi-Gain switch and a 9-volt adapter input. An On/Off and Boost switch is located at the bottom of the unit.

Combined with an old Strat and a Deluxe Reverb, the XD-1 was easy to decipher. The Low Band conjured up silky bottom end that could be tweaked with great detail. Having the Mix knob all the way to the left is the way to go when dialing in the Low Band, as it isolates that EQ spectrum. With the Mix knob turned to the right, the High Band nails the top end with as much bark or bite required.

Mixing the bands together with the Mix knob blends them to the environment. At a local gig, less high end was needed as the venue filled up. A light adjustment with the Mix knob remedied that. The Boost switch yielded smooth, raspy, and resonant, to full-out metal. The ability to manipulate the low-mids with the Filter knob really came in handy for handcrafted distortion.

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Prymaxe

Brimstone Audio XD-1 Crossover Distortion

Prymaxe

Brimstone Audio Crossover Distortion XD-1 - BASS Demo

MrExcane

Brimstone Audio Crossover Distortion XD-1

John Huldt

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Critic Reviews

Brimstone Audio Crossover Distortion XD-1 | Vintage Guitar® magazine

vintageguitar.com

The Brimstone Audio Crossover XD-1 Distortion Pedal is a tone chameleon, packing bi-amping technology into a compact unit. With separate high and low frequency controls, it offers remarkable clarity, allowing each note to ring distinctly without interference. The pedal's Mix knob excels in balancing these frequencies, while the Boost switch adds versatility, from smooth to full-on metal tones. Although it demands more pedalboard space, its sturdy build and nuanced sound shaping make it a must-have for tone enthusiasts. Perfect for those who crave the layered guitar sounds of their favorite records.

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Jeff Matz

Bassist

High On Fire

Verified via Effects Bay

A photo of Jeff Matz's pedalboard on the ScionAV tour Dec 2013 was posted to Dunlop's instagram and broken down on effectsbay.com

https://www.instagram.com/p/iHK-OJGEJa/?utm_content=buffer3b95b&utm_source=buffer&utm_medium=twitter&utm_campaign=Buffer#

http://www.effectsbay.com/2013/12/pedalboard-break-down-jeff-matz-high-on-fire/#prettyPhoto

Ben McKee

Bassist

Imagine Dragons

Verified via Photo

In this photo of Ben's pedal board, taken from the article on the Rig Rundown with Imagine Dragons, the Crossover distortion sits directly at the center of the board.