Here is a pair of Cello Performance monoblock amplifiers in excellent condition. These were curated from a complete reference system. The Performance Amplifier is a four chassis set, comprised of two mono power supplies and two mono power amplifiers. The Performance Amplifier includes many engineering features exclusive to Cello, which together provide unparalleled speed, clarity, impact, natural tone quality and reliability. Each amplifier chassis has a balanced audio input, balanced bridging output, and four sets of barrier strip outputs. Three pin Fischer connectors are used to provide balanced line audio connections of the highest quality. Product Specifications:Class of operation:Class AB1Power Output (single amp):@8 OhmsRated: 200 WattsClipping: @1000 Hz >350 Watts@4 OhmsRated: 400 WattsClipping: @1000 Hz >700 Watts@2 OhmsRated: 800 WattsClipping: @1000 Hz >1000 Watts@1 OhmRated: 1000 WattsClipping: @1000 Hz >1300 Watts