{"product_id":"sugden-masterclass-pa-4-mm-mc-phono-preamplifier","title":"Sugden Masterclass PA-4 MM\/MC Phono Preamplifier","description":"\u003ch1\u003eSugden Masterclass PA-4 – Class A MM\/MC Phono Preamplifier\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Sugden Masterclass PA-4 is a dedicated phono preamplifier for serious vinyl systems, combining two Moving Coil inputs, one Moving Magnet input and carefully engineered Class A circuitry.\u003c\/strong\u003e Designed for listeners who want a refined analogue front end with practical cartridge flexibility, it preserves the natural character, atmosphere and low-level detail that make vinyl playback so rewarding.\u003c\/p\u003e\n\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\n\u003cp\u003e\nThe PA-4 provides three separate phono inputs: two for Moving Coil cartridges and one for Moving Magnet. This allows more than one turntable or tonearm to remain connected, making it particularly useful for advanced analogue systems or listeners who regularly alternate between cartridges.\n\u003c\/p\u003e\n\n\u003cp\u003e\nSugden uses a Class A current-feedback circuit for the Moving Coil stage and a Class A voltage-feedback circuit for the Moving Magnet stage. RIAA correction is incorporated within the MM stage’s negative-feedback loop, while DC servo circuits allow the musical signal to remain directly coupled from the MC input through to the final output.\n\u003c\/p\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible cartridge support:\u003c\/strong\u003e two MC inputs and one MM input accommodate a wide range of turntables and cartridges.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelectable MC loading:\u003c\/strong\u003e front-panel selection between 100Ω and 470Ω supports effective matching with many Moving Coil designs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow-noise analogue architecture:\u003c\/strong\u003e dedicated Class A gain stages are designed to preserve subtle musical information.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual line outputs:\u003c\/strong\u003e two outputs allow convenient connection to more than one amplifier or recording component.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLong-term ownership:\u003c\/strong\u003e gold-plated circuit boards and hand assembly reflect Sugden’s emphasis on stability and serviceability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDedicated MM and MC phono preamplifier\u003c\/li\u003e\n  \u003cli\u003eTwo Moving Coil inputs\u003c\/li\u003e\n  \u003cli\u003eOne Moving Magnet input\u003c\/li\u003e\n  \u003cli\u003eTwo line-level outputs\u003c\/li\u003e\n  \u003cli\u003eClass A current-feedback MC stage\u003c\/li\u003e\n  \u003cli\u003eClass A voltage-feedback MM stage\u003c\/li\u003e\n  \u003cli\u003eSelectable MC loading: 100Ω or 470Ω\u003c\/li\u003e\n  \u003cli\u003e47kΩ MM input loading\u003c\/li\u003e\n  \u003cli\u003eFront-panel MC1, MC2 and MM selection\u003c\/li\u003e\n  \u003cli\u003eStandby control and input indication\u003c\/li\u003e\n  \u003cli\u003eGold-plated circuit boards\u003c\/li\u003e\n  \u003cli\u003eHandmade in Yorkshire, England\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIdeal For\u003c\/h2\u003e\n\n\u003cp\u003e\nThe Sugden Masterclass PA-4 is intended for dedicated vinyl systems using high-quality MM or MC cartridges. It is especially relevant for listeners with multiple turntables, interchangeable tonearms or more than one cartridge permanently installed.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIts adjustable MC loading makes it a strong partner for premium low-output Moving Coil cartridges, while the dedicated MM input supports conventional Moving Magnet designs without requiring an additional phono stage.\n\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eProduct type\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eClass A MM\/MC phono preamplifier\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eInputs\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e2 × Moving Coil, 1 × Moving Magnet\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eOutputs\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e2 × line level\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eInput sensitivity — MM\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e3.5mV\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eInput sensitivity — MC\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e0.15mV\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eMM loading\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e47kΩ\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eMC loading\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e100Ω or 470Ω\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eOutput level\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e360mV\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eFrequency response\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e10Hz–30kHz, ±0.3dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eSignal-to-noise ratio\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eGreater than 70dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eDimensions (H × W × D)\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e110 × 430 × 330mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eGross packed weight\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e6kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eManufacture\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eHandmade in Yorkshire, England\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhy We Selected This Product\u003c\/h2\u003e\n\n\u003cp\u003e\nAt ExclusivIT, we value phono stages that combine careful analogue engineering with genuinely useful flexibility. The PA-4 is particularly appealing because it supports three connected cartridges without reducing the design to a feature-driven switching box.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIts dedicated Class A MM and MC circuitry, selectable loading and dual outputs make it a serious long-term foundation for a premium vinyl system. For listeners who value tonal naturalness, low-noise performance and the ability to evolve their analogue setup over time, the Sugden Masterclass PA-4 deserves close consideration.\n\u003c\/p\u003e","brand":"SUGDEN AUDIO","offers":[{"title":"Titanium","offer_id":54644535427395,"sku":"SUGDEN-MSPA4-T","price":3400.0,"currency_code":"EUR","in_stock":true},{"title":"Graphite","offer_id":54644535460163,"sku":"SUGDEN-MSPA4-G","price":3400.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0788\/2080\/2883\/files\/1ba66a_81ba50bb678f424a94a3d2e5f2f2bfaf.avif?v=1784300067","url":"https:\/\/www.exclusivit.eu\/products\/sugden-masterclass-pa-4-mm-mc-phono-preamplifier","provider":"ExclusivIT","version":"1.0","type":"link"}