{"product_id":"grado-platinum-4-phono-cartridge","title":"Grado Platinum 4 Phono Cartridge","description":"\u003cp\u003eThe Grado Platinum 4 Phono Cartridge encases a precision moving iron transducer within a resonance-controlled Mediterranean olive wood body, engineered for vinyl enthusiasts seeking nuanced analogue reproduction. As an integral member of the Timbre Series, this cartridge employs ultra-high-purity 6N oxygen-free continuous-cast copper coils and a bonded elliptical diamond stylus to trace record grooves with exacting mechanical stability. Available in High Output and Low Output configurations, the cartridge interfaces seamlessly with standard moving-magnet or dedicated high-gain phono stages without requiring capacitance adjustments.\u003c\/p\u003e\u003ch3\u003eThe Hi-Fi Centre Team Take\u003c\/h3\u003e\u003cp\u003eLiving with the Grado Platinum 4 means enjoying an organic, full-bodied tonal balance that brings late-night listening sessions to life with genuine warmth and intimacy. The dense Mediterranean olive wood housing naturally tempers mechanical resonance, yielding an articulate, fatigue-free presentation across hours of continuous playback. Its moving iron generator delivers the dynamic agility and low effective moving mass typically associated with moving-coil designs, without excessive fragility or sensitive capacitive loading demands. For music lovers in Vancouver curating cherished record collections, this cartridge provides an inviting window into the performance that makes acoustic instruments and vocals feel remarkably present.\u003c\/p\u003e\u003ch3\u003eKey Acoustic \u0026amp; Design Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMediterranean Olive Wood:\u003c\/strong\u003e Damps internal resonance and chassis vibration to preserve an organic, naturally balanced tonal profile.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoving Iron Architecture:\u003c\/strong\u003e Delivers exceptionally low effective moving mass and rapid transient response using Joseph Grado's patented flux-bridger principle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Purity 6N Coils:\u003c\/strong\u003e Employs cryogenically treated 6N OCC copper wiring for pristine signal transmission and wide channel separation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthorized Dealer Support:\u003c\/strong\u003e Procured through Hi-Fi Centre as an Authorized Dealer, ensuring authentic Grado factory warranty coverage and dedicated specialist technical support.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Grado\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Platinum 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Timbre Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransducer Type:\u003c\/strong\u003e Moving Iron (MI)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Mediterranean Olive Wood\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCantilever:\u003c\/strong\u003e Aluminium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStylus Profile:\u003c\/strong\u003e Bonded Elliptical Diamond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Wiring:\u003c\/strong\u003e 6N OCC Copper (Cryogenically Treated)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Output Variants:\u003c\/strong\u003e High Output (4.0 mV @ 5 CMV 45°), Low Output (1.0 mV @ 5 CMV 45°)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 10 Hz – 60,000 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Separation:\u003c\/strong\u003e 30 dB average (10 Hz – 30,000 Hz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Tracking Force:\u003c\/strong\u003e 1.6 – 1.9 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompliance:\u003c\/strong\u003e 20 µm\/mN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Resistance:\u003c\/strong\u003e High Output: 660 Ω | Low Output: 70 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInductance:\u003c\/strong\u003e High Output: 55 mH | Low Output: 6 mH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Load:\u003c\/strong\u003e 10,000 Ω – 47,000 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCartridge Weight:\u003c\/strong\u003e 9.4 g\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Grado","offers":[{"title":"High Output","offer_id":46005957492789,"sku":"Platinum 4-LO","price":550.0,"currency_code":"CAD","in_stock":true},{"title":"Low Output","offer_id":46005957525557,"sku":"Platinum 4-HO","price":550.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2246\/9355\/files\/GradoPlatinum4.jpg?v=1789583901","url":"https:\/\/hificentre.com\/products\/grado-platinum-4-phono-cartridge","provider":"Hi-Fi Centre","version":"1.0","type":"link"}