{"product_id":"used-open-box-matrix-audio-mp-1-preamplifier","title":"Matrix Audio MP-1 Used \/ Open-Box Preamplifier","description":"\u003ch2\u003eProduct overview\u003c\/h2\u003e\n\u003cp\u003eThe Matrix Audio MP-1 is a Class A preamplifier from the M Series for two-channel systems using power amplifiers and passive speakers. This used \/ open-box private quote page helps HiFiLoop confirm the right unit and configuration before quotation.\u003c\/p\u003e\n\u003ch2\u003eKey features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMatrix Audio’s first Class A preamplifier in the M Series.\u003c\/li\u003e\n\u003cli\u003eFully differential transistor input stage with high-bias pure Class A output stage.\u003c\/li\u003e\n\u003cli\u003eFour independent fully balanced amplification units across the left and right channels.\u003c\/li\u003e\n\u003cli\u003e3 pairs of RCA inputs and 3 pairs of XLR inputs with per-input level adjustment.\u003c\/li\u003e\n\u003cli\u003e1 pair of RCA outputs and 2 pairs of XLR outputs with flexible output control.\u003c\/li\u003e\n\u003cli\u003eResistor-array volume control using precision resistors and sealed reed relays.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eMatrix Audio MP-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct category\u003c\/th\u003e\n\u003ctd\u003ePreamplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInputs\u003c\/th\u003e\n\u003ctd\u003e3 pairs RCA and 3 pairs XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutputs\u003c\/th\u003e\n\u003ctd\u003e1 pair RCA and 2 pairs XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eXLR input \/ output impedance\u003c\/th\u003e\n\u003ctd\u003e40 kΩ input; 40 Ω output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRCA input \/ output impedance\u003c\/th\u003e\n\u003ctd\u003e20 kΩ input; 20 Ω output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency response\u003c\/th\u003e\n\u003ctd\u003e20 Hz-20 kHz ±0.1 dB; 250 kHz @ -3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDynamic range\u003c\/th\u003e\n\u003ctd\u003eXLR output: 129 dB A-weighting; RCA output: 125 dB A-weighting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch2\u003eSeries \/ category notes\u003c\/h2\u003e\n\u003cp\u003eMP-1 is an M Series preamplifier; HiFiLoop keeps the existing speaker-amplifier workaround because the current category set has no dedicated preamplifier value.\u003c\/p\u003e\n\u003ch2\u003eCondition \u0026amp; availability\u003c\/h2\u003e\n\u003cp\u003eThis is a used \/ open-box reference listing.\u003c\/p\u003e\n\u003cp\u003eFinal pricing, condition, accessories, and availability are confirmed case by case.\u003c\/p\u003e\n\u003ch2\u003eShipping \u0026amp; support\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3-5 business days processing after confirmation\u003c\/li\u003e\n\u003cli\u003e7-15 days typical international shipping\u003c\/li\u003e\n\u003cli\u003eFree shipping over $199\u003c\/li\u003e\n\u003cli\u003e14-day DOA support\u003c\/li\u003e\n\u003cli\u003eRepair path from day 15 to day 180\u003c\/li\u003e\n\u003cli\u003eBuyer may be responsible for return shipping, taxes, and duties\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat does this Reference Listing mean?\u003c\/h3\u003e\n\u003cp\u003eIt is a private quote page for a used or open-box unit. HiFiLoop confirms the final unit details before quotation.\u003c\/p\u003e\n\u003ch3\u003eIs this exact unit ready to ship?\u003c\/h3\u003e\n\u003cp\u003eNot automatically. Each unit is checked case by case before a quote is confirmed.\u003c\/p\u003e\n\u003ch3\u003eCan HiFiLoop help me find another unit?\u003c\/h3\u003e\n\u003cp\u003eYes. Send your target model, destination country, condition preference, and any version or accessory requirements.\u003c\/p\u003e","brand":"Matrix Audio","offers":[{"title":"Default Title","offer_id":48350694539478,"sku":null,"price":5589.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0790\/7445\/9862\/files\/1_1__5_167dc3a1-35ba-4fd9-9f9c-7ff62e7e6bbc.png?v=1781164178","url":"https:\/\/www.hifiloop.com\/zh\/products\/used-open-box-matrix-audio-mp-1-preamplifier","provider":"HiFiLoop","version":"1.0","type":"link"}