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Reference Two Channel Power Amplifier 857
Our 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.
Bridgeable 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.
Effortless power delivery of 500W per channel into four ohms and bridgeable to >1.5kW mono into 4Ω.
1-100kHz frequency response -/+ 2dB – Perfect for high resolution audio.
Fan assisted cooling operating at elevated temperatures enabling silent operation in room and rack installations.
Low feedback construction provides ultra-low distortion, ensuring an unparalleled level of clarity and transparency across the audible range.
Two XLR balanced inputs
Two RCA unbalanced inputs
250W RMS into 8 Ohms per channel both channels driven
500W RMS into 4 Ohms per channel both channels driven
Bridgeable to >1KW RMS into 8 Ohms • Bridgeable to >1.5KW RMS into 4 Ohms
4 WBT terminals per side allow bi-wiring
Trigger input [3.5mm 5-30 VDC]
High level of passive cooling for silent in-room running
Six variable speed fans maintain amp functionality if hostile thermal conditions encountered in rack
Backlit touch sensitive logo changes colour to indicate amplifier’s status
‘Standby’ [BLUE], ‘Normal Operation’ [GREEN]’, ‘Fans Active’ [AMBER], ‘Overload’ [RED]
175mm [6.9in] without feet
195mm [7.7in] with feet
Standalone 445mm [17.6in]
Rack-mount 425mm [16.8in]
Standalone 32kg [70.5lbs]
Rack-mount 35kg [77.1lbs]
Black finish in aluminium and glass
Dedicated Rack-mount variant (4U high)
Custom Meridian Select colours also available
Advanced linear power supply: 100V ac 50/60 Hz | 110-120V ac 50/60Hz | 220-240V ac 50/60Hz
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