The popularity of the Masterclass series has resulted in over seventeen years of continuous production. Offering an excellent price/performance ratio it is easy to see why it remains so successful. With an abundance of headroom, the MPA-4 mono power amplifiers deal easily with heavy complex music, allowing the low level detail to be heard clearly and accurately. Boasting a fully balanced circuit design, it can be the engine room of a fully balanced hi fi system. MPA-4 Specifications Inputs: Mono balanced Outputs: Single pair multi-way locking binding posts Input Sensitivity: 1Volt for full output Power output: 165 Watts into 8 Ohms both channels working Frequency response: +/-0dB 15Hz-30kHz Bandwidth: -3dB points 2Hz-200kHz Signal to noise: >85dB Gross weight (packed): 25kgs x 2 Dimensions: 250 x 430 x 360mm (hwd)