{"id":1809,"date":"2026-09-04T10:16:17","date_gmt":"2026-09-04T10:16:17","guid":{"rendered":"https:\/\/metalheadamps.com\/?post_type=product&#038;p=1809"},"modified":"2026-09-04T10:24:26","modified_gmt":"2026-09-04T10:24:26","slug":"metalhead-electronics-marshall-mod-in-a-box","status":"publish","type":"product","link":"https:\/\/metalheadamps.com\/?product=metalhead-electronics-marshall-mod-in-a-box","title":{"rendered":"Metalhead Electronics Marshall Mod In A Box"},"content":{"rendered":"<h4>Installations requires zero technical knowledge,\u00a0\u00a0<em>NO<\/em>\u00a0soldering or permanent drilling.<\/h4>\n<hr \/>\n<p><strong>METALHEAD MOD IS AVAILABLE FOR<\/strong>\u2013 (More are Coming soon) :<\/p>\n<ul>\n<li>Origin<\/li>\n<li>JCM800<\/li>\n<li>JTM45<\/li>\n<li>JVM1<\/li>\n<li>2550STD JUBILEE<\/li>\n<li>2204<\/li>\n<li>JCM900<\/li>\n<li>JMP<\/li>\n<li>JTM100-Lead-Trem-100W-1959T<\/li>\n<li>Plexi-Superlead<\/li>\n<li>SV20<\/li>\n<\/ul>\n<p>Elan Memran of\u00a0<a href=\"https:\/\/jedistar.com\/metalhead-electronics\/\" target=\"_blank\" rel=\"noopener\">Metalhead Electronics<\/a>\u00a0the architect behind the 90s LA Metal guitar tone brings the legendary industrial metal tones popularized by Dino Cazares on Fear Factory\u2019s\u00a0<em>Demanufacture<\/em>\u00a0directly to your Marshall amplifier.<\/p>\n<p>This drop-in external modification box instantly converts your amp\u2019s circuit into a classic JCM800 design, switchable to the signature Metalhead high-gain mod with a built-in famous noise gate.<\/p>\n<p>Simply remove 1 or 2 of your amp\u2019s preamp tubes( depends on the amp model) , plug them into the external mod box, and run the included adapter plugs back into the amp\u2019s empty tube sockets. Your original amp circuits are cleanly bypassed and replaced with the Metalhead mod.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1780\" src=\"https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/mod-copy.png\" alt=\"\" width=\"1924\" height=\"879\" srcset=\"https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/mod-copy.png 1924w, https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/mod-copy-300x137.png 300w, https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/mod-copy-1024x468.png 1024w, https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/mod-copy-768x351.png 768w, https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/mod-copy-1536x702.png 1536w, https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/mod-copy-250x114.png 250w, https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/mod-copy-621x284.png 621w\" sizes=\"auto, (max-width: 1924px) 100vw, 1924px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Early-bird rate of ($399) (originally $649 . This promotional price expires on September 1 or when the first 10 units sell, whichever happens first.<\/p>\n<p><strong><a href=\"https:\/\/metalheadamps.com\/?page_id=16\">Join the waiting list to secure yours \u2013 no purchase necessary- we\u2019ll notify you as soon as it\u2019s ready to ship.<\/a><\/strong><\/p>\n<p>We also offer a free installation pay only for shipping ( no punching ,drilling or modifying the originality of your amp )<\/p>\n<p><strong>Key benefits:<\/strong><\/p>\n<ul>\n<li>Amp with no master volume will now have a master volume<\/li>\n<li>Switchable between jcm800 circuit and the Metalhead moded jcm800 circuit<\/li>\n<li>Noise gate built in ( Famous Pee Cup noise gate)<\/li>\n<li>Two controllable gain stages, Master Volume, noise gate control and mod on off switch<\/li>\n<li><strong>no drilling or changing your amp originality<\/strong>\u00a0keeping its value as stock amp<\/li>\n<li>Totally removable and moving it to other amp( you\u2019ll have to check with me if it is compatible )<\/li>\n<\/ul>\n<div dir=\"auto\"><strong>How safe is the new Metalhead mod for your amp?<\/strong><\/div>\n<div dir=\"auto\">The Metalhead mod seems designed with safety in mind, as it\u2019s described as \u201cremovable without drilling or changing the amp\u2019s originality or voiding warranty\u2019s \u201d This suggests that the modification is non-invasive and won\u2019t cause permanent damage to your Marshall amp.<\/div>\n<div dir=\"auto\">Additionally, the fact that it\u2019s plug-and-play, similar to replacing a preamp tube, implies a level of safety and ease of use. However, as with any modification, it\u2019s always a good idea to follow the installation instructions carefully and ensure the module is properly seated and secured to avoid any potential issues.<\/div>\n<div class=\"x9f619 x1ja2u2z x78zum5 x1n2onr6 x1r8uery x1iyjqo2 xs83m0k xeuugli x1qughib x1qjc9v5 xozqiw3 x1q0g3np xv54qhq xf7dkkf x18d9i69 xyamay9 x1ws5yxj xw01apr x4cne27 xifccgj\">\n<div class=\"x9f619 x1n2onr6 x1ja2u2z x78zum5 xdt5ytf x193iq5w xeuugli x1r8uery x1iyjqo2 xs83m0k x1icxu4v x25sj25 x10b6aqq x1yrsyyn\">\n<div class=\"x9f619 x1ja2u2z x78zum5 x1n2onr6 x1r8uery x1iyjqo2 xs83m0k xeuugli x1qughib x6s0dn4 xozqiw3 x1q0g3np xyri2b x1c1uobl x18d9i69 xexx8yu x1ws5yxj xw01apr x4cne27 xifccgj\">\n<div><\/div>\n<div><\/div>\n<div class=\"x9f619 x1n2onr6 x1ja2u2z x78zum5 xdt5ytf x193iq5w xeuugli x1r8uery x1iyjqo2 xs83m0k x1icxu4v x25sj25 x10b6aqq x1yrsyyn\"><strong><span class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x676frb x1lkfr7t x1lbecb7 x1s688f xzsf02u\" dir=\"auto\">How does the mod work?<\/span><\/strong><\/div>\n<div class=\"x9f619 x1n2onr6 x1ja2u2z x78zum5 xdt5ytf x2lah0s x193iq5w xeuugli x1icxu4v x25sj25 x10b6aqq x1yrsyyn\">\n<div class=\"x9f619 x1ja2u2z x78zum5 x2lah0s x1n2onr6 x1qughib x1qjc9v5 xozqiw3 x1q0g3np xyri2b x1c1uobl x18d9i69 xexx8yu x1lxpwgx x165d6jo x4vbgl9 x1rdy4ex\">\n<div class=\"x9f619 x1n2onr6 x1ja2u2z x78zum5 xdt5ytf x2lah0s x193iq5w xeuugli x11lfxj5 x135b78x xjkvuk6 x1iorvi4\">The mod, created by Elan Memran, is designed to convert a Marshall amp into a JCM800 circuit. It also includes a switch to toggle between jcm800 circuit and the Metalhead mod.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"x9f619 x1ja2u2z x78zum5 x2lah0s x1n2onr6 x1qughib x1qjc9v5 xozqiw3 x1q0g3np xv54qhq xf7dkkf x18d9i69 xyamay9 x1ws5yxj xw01apr x4cne27 xifccgj\">\n<div class=\"x9f619 x1n2onr6 x1ja2u2z x78zum5 xdt5ytf x193iq5w xeuugli x1r8uery x1iyjqo2 xs83m0k x1icxu4v x25sj25 x10b6aqq x1yrsyyn\">\n<div dir=\"auto\">\n<div class=\"html-div xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl\" tabindex=\"-1\">\n<div><\/div>\n<div class=\"x1yztbdb\"><strong><span class=\"x193iq5w xeuugli x1fj9vlw x13faqbe x1vvkbs xt0psk2 xt4736n x1havqas x1f0sm9e x12qp5cl xzsf02u x1yc453h\">The key features of the mod are:<\/span><\/strong><\/div>\n<\/div>\n<div class=\"html-div xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl\" tabindex=\"-1\">\n<ul>\n<li value=\"1\">\n<div class=\"x1e56ztr\"><span class=\"x193iq5w xeuugli x1fj9vlw x13faqbe x1vvkbs xt0psk2 xt4736n x1havqas x1f0sm9e x12qp5cl xzsf02u x1yc453h\">No permanent modifications: It\u2019s removable without drilling or altering the amp.<\/span><\/div>\n<\/li>\n<\/ul>\n<\/div>\n<div class=\"html-div xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl\" tabindex=\"-1\">\n<ul>\n<li value=\"2\">\n<div class=\"x1e56ztr\"><span class=\"x193iq5w xeuugli x1fj9vlw x13faqbe x1vvkbs xt0psk2 xt4736n x1havqas x1f0sm9e x12qp5cl xzsf02u x1yc453h\">Easy installation: It plugs into the preamp tube sockets, replacing the tubes.<\/span><\/div>\n<\/li>\n<\/ul>\n<\/div>\n<div class=\"html-div xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl\" tabindex=\"-1\">\n<ul>\n<li value=\"3\">\n<div class=\"x1e56ztr\"><span class=\"x193iq5w xeuugli x1fj9vlw x13faqbe x1vvkbs xt0psk2 xt4736n x1havqas x1f0sm9e x12qp5cl xzsf02u x1yc453h\">Built-in noise gate: Helps reduce unwanted noise and tightening the sound.<\/span><\/div>\n<\/li>\n<\/ul>\n<\/div>\n<div class=\"html-div xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl\" tabindex=\"-1\">\n<div class=\"x1e56ztr\"><span class=\"x193iq5w xeuugli x1fj9vlw x13faqbe x1vvkbs xt0psk2 xt4736n x1havqas x1f0sm9e x12qp5cl xzsf02u x1yc453h\">This means users can switch between the JCM800 circuit and Elan\u2019s Metalhead mod, getting two distinct tones from one amp, while maintaining the original amp\u2019s integrity.<\/span><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1774\" src=\"https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/4.jpg\" alt=\"\" width=\"1106\" height=\"736\" srcset=\"https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/4.jpg 1106w, https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/4-300x200.jpg 300w, https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/4-1024x681.jpg 1024w, https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/4-768x511.jpg 768w, https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/4-250x166.jpg 250w, https:\/\/metalheadamps.com\/wp-content\/uploads\/2026\/08\/4-451x300.jpg 451w\" sizes=\"auto, (max-width: 1106px) 100vw, 1106px\" \/><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_links_to":"","_links_to_target":""},"product_brand":[],"product_cat":[28],"product_tag":[],"class_list":["post-1809","product","type-product","status-publish","product_cat-marshall-mods","first","instock","sale","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/metalheadamps.com\/index.php?rest_route=\/wp\/v2\/product\/1809","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/metalheadamps.com\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/metalheadamps.com\/index.php?rest_route=\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/metalheadamps.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1809"}],"wp:attachment":[{"href":"https:\/\/metalheadamps.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1809"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/metalheadamps.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=1809"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/metalheadamps.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=1809"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/metalheadamps.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=1809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}