{"product_id":"koetsu-rosewood-signature-platinum-mc-phono-cartridge","title":"Koetsu Rosewood Signature Platinum MC Phono Cartridge","description":"\u003cdiv class=\"project-meta\"\u003e\n\u003cdiv class=\"project-description\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eThe Koetsu Rosewood Signature Platinum is a low-output moving-coil cartridge that marries Koetsu’s classic rosewood aesthetic with the platinum-magnet motor system and silver-plated coils normally reserved for its stone-body flagships. It is voiced to combine the traditional Koetsu warmth and harmonic richness with modern transparency, extension, and spatial precision.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\" data-state=\"closed\"\u003e\u003cspan class=\"citation inline\" style=\"width: 123px;\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"design-and-construction\"\u003eDesign and construction\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eThe cartridge is built around a hand-carved body of aged rosewood finished in clear lacquer, which yields a stiffer, more inert shell than the standard Rosewood while preserving the company’s signature look. Under the skin, ultra-pure six-nines copper coils are clad in silver and wound on square iron formers chosen for stable magnetic behavior and low oxidation.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\" data-state=\"closed\"\u003e\u003cspan class=\"citation inline\" style=\"width: 93px;\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eRare platinum-alloy magnets form the heart of the motor, a technology Koetsu reserves for its top-tier designs and that significantly differentiates this model from the standard and Signature Rosewood variants. A boron cantilever, coupled to a precision-ground line-contact stylus, is used to extract fine detail while maintaining Koetsu’s characteristic fluidity and tonal density.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\" data-state=\"closed\"\u003e\u003cspan class=\"citation inline\" style=\"width: 63px;\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"technical-character\"\u003eTechnical character\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eElectrically, the Rosewood Signature Platinum is a low-output MC, specified at roughly 0.3 mV and an internal impedance around 5 ohms, which makes it a natural partner for high-gain, low-noise moving-coil phono stages or quality step-up transformers. Its frequency response is rated from 20 Hz to 100 kHz, with medium-low compliance and a recommended tracking force in the 1.8–2.0 g range, suiting medium to higher effective-mass tonearms.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\" data-state=\"closed\"\u003e\u003cspan class=\"citation inline\" style=\"width: 93px;\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eChannel balance is tightly controlled to within about 0.5 dB at 1 kHz, with separation figures in the mid-20s dB and beyond, supporting stable imaging and a well-defined stage. Koetsu’s long-standing practice of pre-aging its suspensions and carefully matching coils and cores contributes to the cartridge’s consistency and longevity in demanding reference systems.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\" data-state=\"closed\"\u003e\u003cspan class=\"citation inline\" style=\"width: 93px;\"\u003e\u003c\/span\u003e\u003c\/span\u003e \u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003ethe Rosewood Signature Platinum sound is described as blending the saturated tone, harmonic fullness, and sweetness associated with classic Koetsu cartridges with a more linear, extended, and open top end than earlier generations. The platinum motor and boron\/line-contact front end yield a presentation with increased air, focus, and low-level resolution, while preserving a generous, textural midband that flatters strings and vocals.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\" data-state=\"closed\"\u003e\u003cspan class=\"citation inline\" style=\"width: 69px;\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eSpatially, it is known for a deep, layered soundstage with strong image stability and a sense of continuous, “breathing” space, particularly evident in acoustic recordings. Dynamics and bass authority also step up compared with non-platinum Rosewood variants, giving the cartridge a more authoritative yet still organic sense of drive.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\" data-state=\"open\"\u003e\u003cspan class=\"citation inline\" style=\"width: 117px;\"\u003e\u003c\/span\u003e\u003c\/span\u003e \u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003eThe Koetsu Rosewood is a cornerstone of high-performance analog playback history. By carefully selecting ultra high purity materials and aging parts to perform optimally, Sugano-san formed a cartridge that recreates real breathing music extracted from the grooves of your record collection. \u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003eThe Koetsu Rosewood Signature Platinum features rare platinum magnets and silverplated 6N copper coils  usually reserved for Koetsu's stone body cartridges. It's the perfect choice for those lusting after a stone model but require a cartridge with less mass or simply prefer the look of rosewood. \u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003e\u003cem\u003e\"I'd never before had the sense so strongly that I was actually hearing the mike feed. It was truly amazing; I felt like I was right there.\"   \u003c\/em\u003e               Jonathan Scull, Stereophile Magazine November 1998\u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003e\u003cem\u003e“To me, the Koetsu Rosewood Signature Platinum felt extraordinarily natural, sophisticated, and correct. Most important, Koetsu's best rosewood-bodied cartridge made me feel good about the records I own. Once you go Koetsu . . .” \u003c\/em\u003eHerb Reichert, Stereophile Magazine December 2018\u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003eLacquered Aged Rosewood Body\u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003eSilverplated Copper Coil Wiring\u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003ePlatinum Magnet\u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003eBoron Cantilever\u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003e0.3 mV Output\u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003e12.4g Net Weight\u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003eRecommended Tracking Force 1.8-2.0g\u003c\/p\u003e\n\u003cp class=\"\" data-rte-preserve-empty=\"true\" style=\"white-space: pre-wrap;\"\u003eRecommended Load 75-500 ohms\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"image-list\" id=\"yui_3_17_2_1_1779129448985_315\"\u003e\n\u003cdiv class=\"image\" id=\"yui_3_17_2_1_1779129448985_314\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Koetsu","offers":[{"title":"Default Title","offer_id":49948894822540,"sku":null,"price":12495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0730\/3308\/9164\/files\/koetsurosewoodsigplat1.webp?v=1779129650","url":"https:\/\/www.ttvjaudio.com\/products\/koetsu-rosewood-signature-platinum-mc-phono-cartridge","provider":"TTVJ Audio","version":"1.0","type":"link"}