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.

Key Features:

• 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 4ohms.
• 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.

Error Correction and Linearity
The open-loop characteristics of an amplifier are crucial to its sound quality. The power amplifier design is intrinsically linear and uses error correction in the output stage to provide low open-loop output impedance. This allows the power amplifier to achieve impeccable measured performance and a high damping factor while only applying modest amounts of negative feedback.

Superbal
The use of shunt feedback to eliminate common mode distortion is well known. Meridian’s proprietary ‘Superbal’ circuitry brings this advantage to the balanced input, while also converting unbalanced signals to balanced as they enter the amplifier.