{"id":4577,"date":"2026-07-21T07:31:56","date_gmt":"2026-07-21T07:31:56","guid":{"rendered":"https:\/\/www.gradothailand.com\/?post_type=product&p=4577"},"modified":"2026-07-21T08:56:41","modified_gmt":"2026-07-21T08:56:41","slug":"master-4","status":"publish","type":"product","link":"https:\/\/www.gradothailand.com\/en\/product\/master-4\/","title":{"rendered":"Master 4"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\t\t\nMaster4 is available in both high and low output configurations, allowing for compatibility across a wide range of phono stages.\n
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  • Its presentation is balanced and controlled, with clear detail and a smooth, natural top end.<\/li>\n \t
  • The midrange carries presence and body, while low frequencies are defined and well structured.<\/li>\n \t
  • Recordings are presented with stability and coherence, maintaining separation and imaging without exaggeration.<\/li>\n \t
  • The overall character remains consistent, allowing the recording to define the listening experience.<\/li>\n<\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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    Moving Iron Design<\/h2>

    All Grado cartridges utilize a moving iron design built on Joseph Grado\u2019s patented flux-bridger principle.<\/p>

    • This approach allows the cartridge to generate a precise signal with extremely low moving mass, while keeping the coil structure fixed.<\/li>
    • The result is a presentation that combines speed, control, and harmonic integrity without the fragility often associated with traditional moving coil systems.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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      Diamond & Cantilever<\/h2>

      Master4 features a nude elliptical diamond mounted to a machined boron cantilever.<\/p>

      • The elliptical profile provides effective groove contact and detail retrieval.<\/li>
      • The machined boron cantilever known for its low mass and responsive behavior contributes speed, stability, and a controlled, natural presentation.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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        Coil & Internal Structure<\/h2>

        The internal signal path is built using ultra-high purity 6N OCC copper, selected for its conductivity and consistency.<\/p>

        • Each cartridge undergoes cryogenic treatment and internal damping to reduce unwanted resonance and preserve signal integrity.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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          Housing<\/h2>

          The Master4 is housed in an American Osage wood body, selected for its ability to help control resonance and contribute to the cartridge\u2019s tonal balance.<\/p>

          • The reshaped housing improves visibility of the cantilever during setup, allowing for more precise alignment while supporting compatibility across a wide range of tonearms.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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            Specs<\/h2>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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              \n \t
            • Body: American Osage Wood<\/li>\n
            • Cantilever: Machined Boron\/Elliptical Diamond<\/li>\n\n
            • \n Output:\n
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              • High: 4.0mV @5 CMV (45)<\/li>\n
              • Low: 1.0mV @5 CMV (45)<\/li>\n <\/ul>\n <\/li>\n\n
              • \n Inductance:\n
                  \n
                • High Output: 55mH<\/li>\n
                • Low Output: 6mH<\/li>\n <\/ul>\n <\/li>\n\n
                • \n Resistance:\n
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                  • High Output: 660 ohms<\/li>\n
                  • Low Output: 70 ohms<\/li>\n <\/ul>\n <\/li>\n<\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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                      • Input Load: 10k-47k ohms<\/li>
                      • Cartridge Weight: 9.6 grams<\/li>
                      • Tracking Force: 1.6-1.9 grams<\/li>
                      • Compliance: 20\u03bcm\/mN<\/li>
                      • Channel Separation: Average 30db – 10-30k Hz<\/li>
                      • Controlled Frequency Response: 10-60 KHz<\/li>
                      • Non-Sensative to Capacitive Load<\/li>
                      • Builds: High Output, Low Output, Mono<\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

                        Grado Master4 \u2013 Advanced Performance from the Timbre Series<\/strong>
                        \nMaster4 is part of the Grado Timbre Series, offering a balanced and engaging presentation built on decades of cartridge design experience. It is designed to deliver clarity, control, and musicality while maintaining the tonal character that defines Grado cartridges.<\/p>\n","protected":false},"featured_media":3720,"template":"","meta":[],"product_brand":[],"product_cat":[56,58],"product_tag":[],"class_list":["post-4577","product","type-product","status-publish","has-post-thumbnail","product_cat-cartridges-en","product_cat-reference-series-timbre-en","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/product\/4577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":4,"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/product\/4577\/revisions"}],"predecessor-version":[{"id":4581,"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/product\/4577\/revisions\/4581"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/media\/3720"}],"wp:attachment":[{"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/media?parent=4577"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/product_brand?post=4577"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/product_cat?post=4577"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/product_tag?post=4577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}