{"product_id":"fonolab-decvs-mc-step-up-transformer","title":"fonolab DECVS Ultra-Low Output MC Dedicated Balanced Step-Up Transformer","description":"\u003cdiv class=\"post-shipping-info\"\u003e\u003cspan\u003e*This is a special order item. Shipping may take about 3–4 weeks.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"products-eyecatch\"\u003e\n\u003ch3\u003eDraws out every detail of ultra-small MC signals without loss\u003c\/h3\u003e\n\u003ch4\u003eA dedicated fixed-structure design dedicated to ultra-low output, low-impedance MCs\u003c\/h4\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"products-desc-title\"\u003eDescription\u003c\/div\u003e\n\u003ch3\u003eIt is actually difficult to get very low output MCs to sound right.\u003c\/h3\u003e\n\u003cp\u003eThe subtlety contained in ultra-small signals,holographic soundstagetemperature—the reasons why very low output MC cartridges are loved are countless. However, bringing out their full potential is not easy. The smaller the output, the more gain is needed, and if you amplify with a phono preamp, noise also increases. Those delicate expressions can be buried in hiss and thin sound—haven’t you had such experiences? The DECVS is a dedicated step-up transformer specifically designed to solve this exact problem: “how to properly drive very low output MCs.”\u003c\/p\u003e\n\u003ch4\u003e■ Not 'one unit for everything,' but 'dedicated to this one unit'\u003c\/h4\u003e\n\u003cp\u003eMany transformers have switching options or multiple paths to accommodate various cartridges. While convenient, compromises inevitably arise. The DECVS goes the opposite way. It has no switches whatsoever and is fixed-structure, aimed specifically at low-output, low-impedance MCs. By determining operational conditions to a single point, it achieves the shortest, purest signal path and steadfast reference operation.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0612\/9139\/7377\/files\/2026-05-27-10-11-38-IMG-6945.jpg?v=1780307299\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c!-- 画像挿入位置：Shopifyにアップロードした画像URLをここに挿入してください --\u003e\n\u003ch3\u003eFull balance brings pitch-black silence and density\u003c\/h3\u003e\n\u003cp\u003eAlthough the DECVS uses RCA input, it is designed for complete balanced (differential) transmission from the input stage. Selected transformer pairs operate fully balanced, canceling out noise and hum, allowing the music to emerge from pitch-black silence. Channel independence is high (channel separation over 80dB), and the position of each instrument is clearly defined, providing an open and clear soundstage. A high step-up ratio of 1:36 comfortably lifts ultra-small MC signals, delivering a dense sound without thinness or stress. Output supports both RCA and XLR, allowing flexible connection to your phono preamp, and with balanced equipment, XLR takes it a step further.\u003c\/p\u003e\n\u003c!-- 画像挿入位置：Shopifyにアップロードした画像URLをここに挿入してください --\u003e\n\u003ch3\u003eA steadfast foundation: rigid chassis and grounding\u003c\/h3\u003e\n\u003cp\u003eFor transformers that handle micro-signals, being \"quiet\" mechanically and electrically is life-or-death. DECVS suppresses vibrations with a highly rigid steel chassis and also functions as a magnetic shield. Furthermore, equipped with an isolated ground and ground lift mechanism, it carefully manages ground loops even in complex systems with increased equipment. All of these are packed together perfectly on the compact FUCHS platform.\u003c\/p\u003e\n\u003ch3\u003eFor people like this:\u003c\/h3\u003e\n\u003cp\u003eIdeal for those who use very low-output MCs (roughly 0.2mV or less), those troubled by insufficient gain or noise from phonoicos, and those who want to \"perfectly perform this role\" rather than \"one unit for everything.\" Those who already have a highly satisfied analog environment will clearly notice the difference between quietness and density.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0612\/9139\/7377\/files\/2026-05-27-10-12-30-IMG-a69518.jpg?v=1780307532\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eMain Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDesigned exclusively for MCs with very low output\u003c\/b\u003e: Optimized for low-impedance cartridges, delivering stable performance with an uncompromising fixed structure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh step-up ratio of 1:36\u003c\/b\u003e: Easily lifts tiny MC signals, creating a sound image that is slimming and stress-free.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eExcellent channel separation (over 80dB)\u003c\/b\u003e: Clearly separates left and right sides, enhancing clarity of localization and soundstage visibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFull Balance \u0026 Floating RCA Input\u003c\/b\u003e: Differential transmission from the input stage achieves jet-black silence with suppressed noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDual RCA\/XLR Output\u003c\/b\u003e: Flexible support for both unbalanced and balanced phonoicos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRigid Steel Chassis\u003c\/b\u003e: Suppresses vibrations and also functions as a magnetic shield. Protects micro-signals from disturbances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIsolated Grounding\u003c\/b\u003e:Ground lift mechanism manages the ground loop, enhancing tranquility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"products-desc-title\"\u003eSpec\u003c\/div\u003e\n\u003ctable class=\"table-spec\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eType\u003c\/th\u003e\n\u003ctd\u003eUltra-low output, low impedance MC dedicated boost transformer (fully balanced)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eStructure\u003c\/th\u003e\n\u003ctd\u003eFully balanced fixed structure with matched transfer (no switching)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTranscore\u003c\/th\u003e\n\u003ctd\u003eSuper Permalloy (made by Tamra)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003estep-up ratio\u003c\/th\u003e\n\u003ctd\u003e1:36\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003einput impedance\u003c\/th\u003e\n\u003ctd\u003e0–4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eoutput impedance\u003c\/th\u003e\n\u003ctd\u003e4kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003efrequency response\u003c\/th\u003e\n\u003ctd\u003e10Hz–100kHz（±1.0dB）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChannel Separation\u003c\/th\u003e\n\u003ctd\u003eOver 80dB (20Hz–50kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePhase characteristics\u003c\/th\u003e\n\u003ctd\u003eWithin 10° (20Hz–50kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eInput terminals\u003c\/th\u003e\n\u003ctd\u003eRCA (floating input stage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOutput terminals\u003c\/th\u003e\n\u003ctd\u003eRCA\/XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGrounding\u003c\/th\u003e\n\u003ctd\u003eIsolated chassis ground (with ground lift mechanism)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChassis\u003c\/th\u003e\n\u003ctd\u003eRigid steel (FUCHS platform)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDimensions (W×D×H)\u003c\/th\u003e\n\u003ctd\u003e155 × 215 × 70 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e2.1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCompatible cartridges\u003c\/th\u003e\n\u003ctd\u003eUltra-low output, low impedance MC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Fonolab","offers":[{"title":"Default Title","offer_id":49219687448833,"sku":null,"price":680000.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/9139\/7377\/files\/decvs01.jpg?v=1780306905","url":"https:\/\/exclusive-audio.jp\/en\/products\/fonolab-decvs-mc-step-up-transformer","provider":"ExAUDIO","version":"1.0","type":"link"}