{"product_id":"ashdown-head-of-doom-geezer-butler-bass-amp-hod-600-uk","title":"Ashdown Head of Doom Geezer Butler Signature Bass Amp Head HOD-600-UK","description":"\u003ch2\u003eAshdown Head of Doom Geezer Butler Signature Bass Amp Head\u003c\/h2\u003e\n\n\u003ch3\u003e600-Watt UK-Built Signature Bass Amplifier\u003c\/h3\u003e\n\n\u003cp\u003eDesigned, tuned, and stage-tested with Black Sabbath bassist Geezer Butler, the Ashdown Head of Doom combines the proven power and flexibility of Ashdown's ABM platform with Geezer's unmistakable low-end authority, articulation, and driven bass tone.\u003c\/p\u003e\n\n\u003cp\u003eBuilt in the Ashdown UK Custom Shop, the HOD-600-UK delivers 600 watts of professional bass amplification, extensive tone shaping, tube-driven harmonic distortion, and the unmistakable twin-VU-meter appearance created for this signature model.\u003c\/p\u003e\n\n\u003ch3\u003eAvailability\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eAvailable to order from ECG Music.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe Head of Doom is a limited-production UK Custom Shop amplifier. Current availability and fulfillment timing may depend on ECG Music inventory, Ashdown production schedules, and existing dealer allocations.\u003c\/p\u003e\n\n\u003cp\u003eOrders are carefully inspected, professionally packed, fully insured, and shipped securely. Tracking information is provided as soon as the amplifier ships.\u003c\/p\u003e\n\n\u003cp\u003eFor current availability or estimated delivery information, contact ECG Music before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\n\u003cp\u003eThe Head of Doom is based on Ashdown's renowned ABM platform, delivering powerful lows, controlled articulation, and the flexibility required for classic Black Sabbath tones, aggressive driven bass sounds, and modern high-headroom performance.\u003c\/p\u003e\n\n\u003cp\u003eIts comprehensive EQ section combines Bass, Middle, and Treble controls with six graphic EQ sliders, giving players detailed control over the amplifier's response. Ashdown's Sub-Harmonic Generator adds a synthesized octave below the original note for additional depth and weight.\u003c\/p\u003e\n\n\u003cp\u003eA 12AX7 preamp tube provides adjustable harmonic drive, allowing players to move from subtle warmth to more aggressive bass distortion. Compatible footswitch control allows key functions to be operated remotely.\u003c\/p\u003e\n\n\u003cp\u003eTwin illuminated VU meters provide visual monitoring while giving the Head of Doom its distinctive stage appearance.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e600-watt Geezer Butler signature bass amplifier head\u003c\/li\u003e\n\u003cli\u003eBuilt in the Ashdown UK Custom Shop\u003c\/li\u003e\n\u003cli\u003eBased on Ashdown's ABM platform\u003c\/li\u003e\n\u003cli\u003eTwin illuminated VU meters\u003c\/li\u003e\n\u003cli\u003eComprehensive EQ with rotary controls and six graphic sliders\u003c\/li\u003e\n\u003cli\u003eAshdown Sub-Harmonic Generator\u003c\/li\u003e\n\u003cli\u003e12AX7 tube-driven harmonic overdrive\u003c\/li\u003e\n\u003cli\u003eFootswitch-controllable functions\u003c\/li\u003e\n\u003cli\u003eSeparate passive and active instrument inputs\u003c\/li\u003e\n\u003cli\u003eBalanced DI output\u003c\/li\u003e\n\u003cli\u003eTuner output\u003c\/li\u003e\n\u003cli\u003eEffects loop\u003c\/li\u003e\n\u003cli\u003eLine input and output\u003c\/li\u003e\n\u003cli\u003eDual combination Jack\/Speakon speaker outputs\u003c\/li\u003e\n\u003cli\u003eDesigned for professional stage, studio, and touring use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e HOD-600-UK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Output:\u003c\/strong\u003e 600 watts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Speaker Impedance:\u003c\/strong\u003e 4 ohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Requirement:\u003c\/strong\u003e 115–230 volts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreamp Tube:\u003c\/strong\u003e 1 × 12AX7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeaker Outputs:\u003c\/strong\u003e 2 × combination Jack\/Speakon outputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e -3 dB at 17 Hz to 30 kHz\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInputs and Outputs\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Instrument Input:\u003c\/strong\u003e 3.9 MΩ, 150 mV range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Instrument Input:\u003c\/strong\u003e 10 kΩ, 300 mV–40 V range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine Input:\u003c\/strong\u003e 22 kΩ, 0 dBu nominal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced DI Output:\u003c\/strong\u003e 600 Ω, 0 dBu nominal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTuner Output:\u003c\/strong\u003e 22 kΩ, 0 dBu nominal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffects Send:\u003c\/strong\u003e 22 kΩ, 0 dBu nominal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffects Return:\u003c\/strong\u003e 22 kΩ, 0 dBu nominal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAuthorized Ashdown Dealer\u003c\/h3\u003e\n\n\u003cp\u003eECG Music is an authorized Ashdown dealer. This purchase includes the applicable Ashdown manufacturer warranty.\u003c\/p\u003e\n\n\u003cp\u003eLocal pickup is available by appointment for completed online orders. Contact \u003ca href=\"mailto:info@ecgmusic.com\"\u003einfo@ecgmusic.com\u003c\/a\u003e for current availability or pickup arrangements.\u003c\/p\u003e","brand":"Ashdown","offers":[{"title":"Default Title","offer_id":42322386026601,"sku":"HOD-600-UK","price":1899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/5494\/5385\/files\/HOD-600Art1_1_0714270966279.jpg?v=1753658559","url":"https:\/\/ecgmusic.com\/products\/ashdown-head-of-doom-geezer-butler-bass-amp-hod-600-uk","provider":"El Cajon Guitars and Music","version":"1.0","type":"link"}