{"product_id":"meridian-reference-857-2-channel-power-amplifier","title":"Meridian Reference 857 - 2 channel Power Amplifier","description":"Meridian's most powerful reference two channel amplifier has been designed and built to deliver the best possible Hi-Res audio performance from any high-quality passive loudspeaker system. Its low-feedback construction provides ultra-low distortion, ensuring an unparalleled level of clarity and transparency across the audible range.\u003cbr\u003e\u003cbr\u003e\n\nBridgeable to over 1.5Kw, the Meridian 857 features a totally new design for a Meridian power amplifier, borne out of extensive research, experience and a thorough understanding of psychoacoustic principles.\u003cbr\u003e\u003cbr\u003e\n\nKEY FEATURES:\u003cbr\u003e\nEffortless power delivery of 500W per channel into four ohms and bridgeable to \u0026gt; 1.5kW mono into 4Ω.\u003cbr\u003e\n1-100kHz frequency response -\/+ 2dB – Perfect for high resolution audio.\u003cbr\u003e\nFan assisted cooling operating at elevated temperatures enabling silent operation in room and rack installations.\u003cbr\u003e\nLow feedback construction provides ultra-low distortion, ensuring an unparalleled level of clarity and transparency across the audible range.\u003cbr\u003e\u003cbr\u003e\n\nTechnical Specifications:-\u003cbr\u003e\n\n\nAUDIO INPUTS\u003cbr\u003e\n\nTwo XLR balanced inputs\u003cbr\u003e\n\nTwo RCA unbalanced inputs\u003cbr\u003e\u003cbr\u003e\n\nAUDIO OUTPUTS\u003cbr\u003e\n\n250W RMS into 8 Ohms per channel both channels driven\u003cbr\u003e\n\n500W RMS into 4 Ohms per channel both channels driven\u003cbr\u003e\n\nBridgeable to \u0026gt; 1KW RMS into 8 Ohms • Bridgeable to \u0026gt; 1.5KW RMS into 4 Ohms\u003cbr\u003e\n\n4 WBT terminals per side allow bi-wiring\u003cbr\u003e\u003cbr\u003e\n\n\nCONTROL SIGNALS\u003cbr\u003e\n\nTrigger input [3.5mm 5-30 VDC]\u003cbr\u003e\u003cbr\u003e\n\nCOOLING\u003cbr\u003e\n\nHigh level of passive cooling for silent in-room running\u003cbr\u003e\n\nSix variable speed fans maintain amp functionality if hostile thermal conditions encountered in rack\u003cbr\u003e\u003cbr\u003e\n\nDISPLAY\u003cbr\u003e\n\nBacklit touch sensitive logo changes colour to indicate amplifier’s status\u003cbr\u003e\n\n‘Standby’ [BLUE], ‘Normal Operation’ [GREEN]’, ‘Fans Active’ [AMBER], ‘Overload’ [RED]\u003cbr\u003e\u003cbr\u003e\n\n\nDIMENSIONS\u003cbr\u003e\n\nHEIGHT: 132mm [5.2in] (4U high in-rack) \u003cbr\u003e\n\nWIDTH: 440mm [17.32in]\u003cbr\u003e\n\nDEPTH: 350mm [13.78in] \u003cbr\u003e\n\nWEIGHT: Standalone: 32kg [70.5lbs] \u003cbr\u003e\n\nRack: 35kg [77.1lbs]\u003cbr\u003e\u003cbr\u003e\n\nCONSTRUCTION\u003cbr\u003e\n\nBlack finish in aluminium and glass \u003cbr\u003e\n\nDedicated rack mount variant (4U high)\u003cbr\u003e\n\nCustom Meridian Select colours also available\u003cbr\u003e\u003cbr\u003e\n\n\nPOWER\u003cbr\u003e\n\nAdvanced linear power supply: 100V ac 50\/60 Hz | 110-120V ac 50\/60Hz | 220-240V ac 50\/60Hz\n\n","brand":"Meridian","offers":[{"title":"Meridian Reference 857 - 2 channel Power Amplifier","offer_id":57413251301708,"sku":"MERIDIANREF857","price":5833.33,"currency_code":"GBP","in_stock":true},{"title":"Meridian Reference 857 - 2 Channel Power Amplifier - Special Colours","offer_id":57422946500940,"sku":"MERIDIANREF857-SC","price":6250.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Meridian-857.jpg?v=1777540910","url":"https:\/\/www.stoneaudio.co.uk\/products\/meridian-reference-857-2-channel-power-amplifier","provider":"Stone Audio","version":"1.0","type":"link"}