{"product_id":"used-mesa-express-550-head","title":"Used Mesa Express 5:50 Head","description":"\u003ch3\u003ePre-owned Mesa Express 5:50 Head, with footswitch, cable, and power cable. In very good condition.\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWeight: 31 lbs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAll-Tube and hand-built in our only shop in Petaluma, CA, the Express 5:50 offers genre-defining sounds, near-limitless versatility, and unbeatable value that others can only imitate. \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"KsbFXc U6u95\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"mPWODf#NS0kde\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_fe\" data-ved=\"2ahUKEwj4lJXQxq2XAxWnFlkFHfyjF4wQ-7AUegYIAAgTEAA\" data-hveid=\"CAAIExAA\" data-processed=\"true\" data-complete=\"true\"\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"oSLmPe#HokZ0d\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_fh\" data-hveid=\"CAAIExAC\" data-complete=\"true\" data-sae=\"\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"KdQfFc#d5Qebf\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_fi\" data-complete=\"true\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"tP2kf#s32ZS\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_fj\" data-complete=\"true\"\u003eTwo-Way Power Scaling:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Features a two-way toggle switch per channel allowing you to drop from \u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"tP2kf#s32ZS\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_fk\" data-complete=\"true\"\u003e50 Watts\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e (Class A\/B push-pull) down to \u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"tP2kf#s32ZS\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_fl\" data-complete=\"true\"\u003e5 Watts\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e (pure single-ended Class A).\u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"oSLmPe#HokZ0d\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_fs\" data-hveid=\"CAAIExAI\" data-sae=\"\" data-complete=\"true\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"KdQfFc#d5Qebf\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_ft\" data-complete=\"true\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"tP2kf#s32ZS\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_fu\" data-complete=\"true\"\u003eThe Contour Knob:\u003c\/strong\u003e Utilizes a variable \u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"tP2kf#s32ZS\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_fv\" data-complete=\"true\"\u003eContour Control knob\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e for each channel. Turning this knob to the right dynamically sweeps the amplifier into a deep \"V-shaped\" mid-scoop while boosting the lows and highs.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"oSLmPe#HokZ0d\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_g2\" data-hveid=\"CAAIExAN\" data-complete=\"true\" data-processed=\"true\" data-sae=\"\"\u003e\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"KdQfFc#d5Qebf\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_g3\" data-complete=\"true\" aria-owns=\"action-menu-parent-container\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"tP2kf#s32ZS\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_g4\" data-complete=\"true\"\u003e3-Button Footswitch:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e The original ships with a smaller 3-button footswitch controlling \u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" jsaction=\"\" jscontroller=\"tP2kf#s32ZS\" data-sfc-root=\"ep\" data-epip=\"\" jsuid=\"WV3HRb_g5\" data-complete=\"true\"\u003eChannel 1\/2, Reverb, and Contour\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Mesa","offers":[{"title":"Default Title","offer_id":67769883164922,"sku":"21138","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1672\/0575\/files\/20261009-DSC_7972.jpg?v=1792177877","url":"https:\/\/martelmusicstore.com\/products\/used-mesa-express-550-head","provider":"Martel Music Store","version":"1.0","type":"link"}