{"id":4567,"date":"2026-07-21T04:11:34","date_gmt":"2026-07-21T04:11:34","guid":{"rendered":"https:\/\/www.gradothailand.com\/?post_type=product&p=4567"},"modified":"2026-07-21T08:49:35","modified_gmt":"2026-07-21T08:49:35","slug":"platinum-4","status":"publish","type":"product","link":"https:\/\/www.gradothailand.com\/en\/product\/platinum-4\/","title":{"rendered":"Platinum 4"},"content":{"rendered":"\t\t
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Platinum4<\/h2>

Utilizing Grado\u2019s moving iron design, Platinum provides a consistent and reliable signal with low moving mass and long-term performance.<\/p>

Offered in both stereo and mono configurations, Platinum continues the tradition of Grado\u2019s wood body cartridges.<\/p>\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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Performance<\/h2>

Platinum4 is available in both high and low output configurations, allowing for compatibility across a wide range of phono stages.<\/p>

  • Its presentation is balanced and controlled, with clear detail and a smooth, natural top end.<\/li>
  • The midrange carries presence and body, while low frequencies remain defined and composed.<\/li>
  • Recordings are presented with stability and coherence, maintaining separation and imaging while allowing the character of the music to come through.<\/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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    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
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      Diamond & Cantilever<\/h2>

      Platinum4 features a bonded elliptical diamond mounted to an aluminum cantilever.<\/p>

      • The elliptical profile provides effective groove contact and reliable tracking.<\/li>
      • The aluminum cantilever contributes to a stable and balanced presentation.<\/li>
      • This combination delivers clarity and control across a wide range of recordings.<\/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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        Coil & Internal Structure<\/h2>\n\n

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

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        • Each cartridge undergoes cryogenic treatment and internal damping to reduce unwanted resonance and preserve signal integrity.<\/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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          Housing<\/h2>

          The Platinum4 is housed in a Mediterranean Olive wood body, selected for its ability to help control resonance and contribute to the cartridge\u2019s tonal balance. The reshaped housing improves visibility of the cantilever during setup, allowing for more precise alignment while supporting compatibility across a wide range of tonearms.<\/p>\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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          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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            • Body: Mediterranean Olive Wood<\/li>
            • Cantilever: Aluminum\/Elliptical Diamond<\/li>
            • Output:
              • High: 4.0mV @5 CMV (45)<\/li>
              • Low: 1.0mV @5 CMV (45)<\/li><\/ul><\/li>
              • Inductance:
                • High Output: 55mH<\/li>
                • Low Output: 6mH<\/li><\/ul><\/li>
                • Resistance:
                  • High Output: 660 ohms<\/li>
                  • Low Output: 70 ohms<\/li><\/ul><\/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
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                      • Input Load: 10k-47k ohms<\/li>
                      • Cartridge Weight: 9.4 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 Platinum4 \u2013 The Essence of the Timbre Series<\/strong>
                        \nPlatinum4 is part of the Grado Timbre Series, offering a balanced and accessible entry into Grado\u2019s wood body cartridge designs. Built on decades of cartridge development, it delivers clarity, stability, and musicality while maintaining the tonal character that defines Grado cartridges.<\/p>\n","protected":false},"featured_media":3724,"template":"","meta":[],"product_brand":[],"product_cat":[56,58],"product_tag":[],"class_list":["post-4567","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\/4567","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\/4567\/revisions"}],"predecessor-version":[{"id":4571,"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/product\/4567\/revisions\/4571"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/media\/3724"}],"wp:attachment":[{"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/media?parent=4567"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/product_brand?post=4567"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/product_cat?post=4567"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.gradothailand.com\/en\/wp-json\/wp\/v2\/product_tag?post=4567"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}