{"product_id":"eq-zeqd-pre-tube-preamp","title":"Earthquaker Devices ZEQD-Pre Tube Preamp","description":"\u003cdiv class=\"row sqs-row\" id=\"yui_3_17_2_1_1767888413439_117\"\u003e\n\u003cdiv class=\"col sqs-col-6 span-6\"\u003e\n\u003cdiv class=\"sqs-block html-block sqs-block-html\" data-block-type=\"2\" data-sqsp-block=\"text\" id=\"block-33e12123924dcc9f95c8\"\u003e\n\u003cdiv class=\"sqs-block-content\"\u003e\n\u003cdiv class=\"sqs-html-content\" data-sqsp-text-block-content=\"\"\u003e\n\u003cp class=\"\"\u003eFrom Earthquaker Devices: \"This all-analog tube preamplifier brings together EarthQuaker Devices’ innovative pedal design and Dr. Z Amplification’s decades of tube amp expertise. With a passive three-band EQ, professional headphone output, balanced XLR output, and onboard analog cabinet simulation, the ZEQD-Pre delivers authentic tube warmth and dynamic response in a complete analog amplifier system that fits right on your pedalboard.\"\u003c\/p\u003e\n\u003cp class=\"\"\u003eSpecs:\u003c\/p\u003e\n\u003cdiv class=\"col sqs-col-6 span-6\"\u003e\n\u003cdiv id=\"block-119cc97c004c7c340fe4\" data-sqsp-block=\"text\" data-border-radii='{\"topLeft\":{\"unit\":\"px\",\"value\":0.0},\"topRight\":{\"unit\":\"px\",\"value\":0.0},\"bottomLeft\":{\"unit\":\"px\",\"value\":0.0},\"bottomRight\":{\"unit\":\"px\",\"value\":0.0}}' data-block-type=\"2\" class=\"sqs-block html-block sqs-block-html\"\u003e\n\u003cdiv class=\"sqs-block-content\"\u003e\n\u003cdiv data-sqsp-text-block-content=\"\" class=\"sqs-html-content\"\u003e\n\u003cp class=\"\"\u003e\u003cstrong\u003eBoost:\u003c\/strong\u003e Use the \u003cem\u003eBoost\u003c\/em\u003e rotary knob for volume control when the Boost is active and the tone controls are bypassed. Boost mode is very loud! Be careful when setting the \u003cem\u003eBoost\u003c\/em\u003e level, especially when using headphones or XLR out.\u003c\/p\u003e\n\u003cp class=\"\"\u003e\u003cstrong\u003eBoost Footswitch:\u003c\/strong\u003e This footswitch defeats the tone controls and delivers a full-range boost without altering the frequency response. This switch is only active when the \u003cem\u003eActivate\u003c\/em\u003e footswitch is on.\u003c\/p\u003e\n\u003cp class=\"\"\u003e\u003cstrong\u003eHeadphone Output:\u003c\/strong\u003e A TRS (Stereo) ¼” headphone jack is located on the left side. Use the \u003cem\u003eLevel\u003c\/em\u003e control to adjust headphone level when the pedal is active. The headphone output works as a unity gain amplifier with cabinet simulation even when the pedal is bypassed.\u003c\/p\u003e\n\u003cp class=\"\"\u003e\u003cstrong\u003eDirect Output:\u003c\/strong\u003e A balanced XLR output is located on the left side of the pedal.\u003c\/p\u003e\n\u003cp class=\"\"\u003e\u003cstrong\u003eGround Lift Switch:\u003c\/strong\u003e Press this switch on the left side of the pedal for ground lift on the XLR output.\u003c\/p\u003e\n\u003cp class=\"\"\u003e\u003cstrong\u003eCab Sim Bypass Switch:\u003c\/strong\u003e Press this switch on the left side of the pedal to remove the analog cabinet simulation on the XLR output.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"col sqs-col-6 span-6\"\u003e\n\u003cdiv id=\"block-57ccbb444a41cee80cb2\" data-sqsp-block=\"text\" data-border-radii='{\"topLeft\":{\"unit\":\"px\",\"value\":0.0},\"topRight\":{\"unit\":\"px\",\"value\":0.0},\"bottomLeft\":{\"unit\":\"px\",\"value\":0.0},\"bottomRight\":{\"unit\":\"px\",\"value\":0.0}}' data-block-type=\"2\" class=\"sqs-block html-block sqs-block-html\"\u003e\n\u003cdiv class=\"sqs-block-content\"\u003e\n\u003cdiv data-sqsp-text-block-content=\"\" class=\"sqs-html-content\"\u003e\n\u003cp class=\"\"\u003e\u003cstrong\u003eLevel:\u003c\/strong\u003e Use the \u003cem\u003eLevel\u003c\/em\u003e rotary knob to adjust the output volume when the tone controls are active.\u003c\/p\u003e\n\u003cp class=\"\"\u003e\u003cstrong\u003eBass:\u003c\/strong\u003e Use the \u003cem\u003eBass\u003c\/em\u003e rotary knob to adjust the frequency range from 20 Hz to 400 Hz.\u003c\/p\u003e\n\u003cp class=\"\"\u003e\u003cstrong\u003eMiddle:\u003c\/strong\u003e Use the \u003cem\u003eMiddle\u003c\/em\u003e rotary knob to adjust the frequency range from 400 Hz to 2 kHz.\u003c\/p\u003e\n\u003cp class=\"\"\u003e\u003cstrong\u003eTreble:\u003c\/strong\u003e Use the \u003cem\u003eTreble\u003c\/em\u003e rotary knob to adjust the frequency range from 2 kHz to 20 kHz.\u003c\/p\u003e\n\u003cp class=\"\"\u003e\u003cstrong\u003eActivate Footswitch:\u003c\/strong\u003e Use this footswitch to activate or bypass the ZEQD-Pre.\u003c\/p\u003e\n\u003cp class=\"\"\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/lL0ArX_c-O8?si=8WXx_jJQ6lYvzBr_\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sqs-block horizontalrule-block sqs-block-horizontalrule\" data-block-type=\"47\" id=\"block-cd85eb5ff67e835b235b\"\u003e\u003c\/div\u003e","brand":"Earthquaker Devices","offers":[{"title":"Default Title","offer_id":48170131325143,"sku":"210000072179","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0468\/6148\/4199\/files\/Screenshot2026-01-07at11.34.00AM.png?v=1767803812","url":"https:\/\/rudysmusic.mom\/products\/eq-zeqd-pre-tube-preamp","provider":"Rudy's Music","version":"1.0","type":"link"}