{"product_id":"nagaoka-mp-300-phono-cartridge","title":"Nagaoka MP-300 Phono Cartridge","description":"\u003ch1\u003eNagaoka MP-300 Phono Cartridge\u003c\/h1\u003e\n\u003ch3\u003eBoron cantilever, elliptical diamond, and machined aluminum frame\u003c\/h3\u003e\n\u003cp\u003eThe Nagaoka MP-300 combines a boron cantilever and 0.4 × 0.7 mil elliptical diamond with the machined aluminum frame used in the upper tier of the MP series. It retains the high-output Moving Permalloy generator and replaceable stylus architecture of the range while extending frequency response to 25 kHz.\u003c\/p\u003e\n\u003cp\u003eIts 3 mV output is designed for a standard 47 kΩ MM phonostage, providing the low-moving-mass advantages of Nagaoka's MP system without requiring a moving-coil input or step-up device.\u003c\/p\u003e\n\u003ch4\u003eMoving Permalloy Generator\u003c\/h4\u003e\n\u003cp\u003eNagaoka's Moving Permalloy design replaces the moving magnet of a conventional MM cartridge with a much lighter piece of magnetically permeable permalloy attached to the rear of the cantilever. The magnet and coils remain stationary in the cartridge body.\u003c\/p\u003e\n\u003cp\u003eReducing moving mass gives the cantilever greater freedom to respond to fine groove modulation while maintaining a useful high-output signal.\u003c\/p\u003e\n\u003ch4\u003eBoron Cantilever\u003c\/h4\u003e\n\u003cp\u003eThe MP-300 uses a boron cantilever, combining low mass with very high stiffness. Its rigidity helps transmit the movement of the stylus to the generator without excessive flexure or stored mechanical energy.\u003c\/p\u003e\n\u003ch4\u003eElliptical Diamond\u003c\/h4\u003e\n\u003cp\u003eThe 0.4 × 0.7 mil elliptical diamond presents a narrower tracing radius to the groove than a conical stylus, allowing it to follow shorter-wavelength high-frequency modulation more accurately.\u003c\/p\u003e\n\u003ch4\u003eMachined Aluminum Frame\u003c\/h4\u003e\n\u003cp\u003eThe MP-300 uses a machined aluminum frame to provide the generator and suspension with a rigid mechanical foundation. Nagaoka specifies channel separation of 25 dB at 1 kHz and channel balance within 1 dB.\u003c\/p\u003e\n\u003ch4\u003eReplaceable Stylus\u003c\/h4\u003e\n\u003cp\u003eThe matching replacement is the Nagaoka JN-P300, retaining the elliptical diamond and boron cantilever.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMP-300 cartridge\u003c\/li\u003e\n\u003cli\u003eStylus guard\u003c\/li\u003e\n\u003cli\u003eMounting screws, washers, and nuts\u003c\/li\u003e\n\u003cli\u003eNon-magnetic screwdriver\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eType:\u003c\/b\u003e Moving Permalloy stereo cartridge\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMounting:\u003c\/b\u003e 1\/2 in.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eStylus:\u003c\/b\u003e 0.4 × 0.7 mil nude elliptical diamond\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eCantilever:\u003c\/b\u003e Boron\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Voltage (At 1 kHz, 5 cm\/sec):\u003c\/b\u003e 3 mV\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFrequency Response:\u003c\/b\u003e 20 Hz–25 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eChannel Separation (At 1 kHz):\u003c\/b\u003e 25 dB\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eChannel Balance (At 1 kHz):\u003c\/b\u003e ≤1 dB\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDynamic Compliance (At 100 Hz):\u003c\/b\u003e 7.2 × 10\u003csup\u003e−6\u003c\/sup\u003e cm\/dyne\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eVertical Tracking Force:\u003c\/b\u003e 1.3–1.8 g\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eLoad Resistance:\u003c\/b\u003e 47 kΩ\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eLoad Capacitance:\u003c\/b\u003e 100 pF\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFrame:\u003c\/b\u003e Machined aluminum\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eReplacement Stylus:\u003c\/b\u003e JN-P300\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 7.8 g\u003c\/p\u003e","brand":"Nagaoka","offers":[{"title":"Default Title","offer_id":54067272679608,"sku":"MP-300","price":779.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/MP-300.png?v=1789663928","url":"https:\/\/upscaleaudio.com\/products\/nagaoka-mp-300-phono-cartridge","provider":"Upscale Audio","version":"1.0","type":"link"}