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Command Earthquake-inducing Low End





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The Head of Doom Geezer Butler Signature Bass Amp Head infuses your playing with fat, gut-churning tones and phenomenal low-end muscle. And it's bursting with features. The Doom control gooses this 600-watt beast's 12AX7 preamp stage, soaking your tone in rich harmonic distortion. Sculpt your sound further with the Head of Doom's 9-band EQ, while you target your sonic sweet spot with dual VU meters. Produce earthshaking sub-harmonics with the Subs control. An array of professional connections allow you to integrate the H.O.D. into a myriad of configurations. If you dug Geezer's tone during Black Sabbath's The End farewell tour, the Head of Doom achieves it ? and then some.





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Doom control soaks your tone in harmonic distortion





The Head of Doom's 12AX7 preamp stage already gives you a sizable helping of sizzle. But cranking up the Doom control is when you really unleash the beast. This control increases the current to the tube, adding serious harmonic grind to your tone (a la "Loner" from 13). And thanks to the 9-band EQ, every tone imaginable is at your disposal.





Target the sweet spot with dual VU meters





Tweaking your gain staging is a breeze with the Head of Doom, by virtue of its dual VU meters. Find your sweet spot via the familiar input level VU. Then achieve your tonal objective with this amp head's tone and EQ controls while monitoring your output level with the second VU meter. At Sweetwater, we think the twin meters provide an eye-catching look onstage, too!





Shake the earth with colossal sub-harmonics





A bass guitarist doesn't just want to be heard ? they want to be FELT. And once you torque up your tone with the Head of Doom's Subs control, the whole room will feel the earth move. This sub-harmonic generator adds an octave below the notes you're performing, adding undeniable muscularity to everything you play. The Subs function is also controllable via footswitch, so you can kick it in whenever inspiration strikes.





Serious professional connectivity





The Ashdown Head of Doom features an array of professional connections, allowing you to meld it into any configuration. A Passive/Active switch matches the impedance of your instrument. A transparent FX loop makes integrating your external effects a breeze. You also get Tuner and Line outputs, as well as a Line Input for connecting an external sampler or sound source. Output muting cuts the DI output but leaves the Tuner output live for silent tuning. A Slave Input on the back of the H.O.D. is designed to be fed by its three transformer-isolated Slave Outputs, allowing you to create a monster rig by running multiple heads from a single input source.





Ashdown Head of Doom Geezer Butler Signature Bass Amp Head Features:


Encapsulates Geezer Butler's onstage tone during Black Sabbath's The End farewell tour


Doom control increases the current to the 12AX7 preamp stage, soaking your tone in rich harmonic distortion


9-band EQ puts every tone imaginable at your disposal


Dual VU meters allow you to target your sonic sweet spot


Subs control produces earthshaking sub-harmonics


Passive/Active switch matches the impedance of your instrument


Transparent FX loop makes integrating your external effects a breeze


Tuner and Line outputs, and a Line Input for connecting an external sampler or sound source


Output muting cuts the DI output but leaves the tuner output live for silent tuning


Run multiple heads from a single input source via Slave Input/transformer-isolated Slave Outputs