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. Specifications Model: MPA-4 Inputs: Mono balanced Outputs: Single pair of multi-way locking binding posts Input Sensitivity: 1 volt for full output Power Output: 165 watts into 8 ohms (both channels working) Frequency Response: ±0 dB, 15 Hz – 30 kHz Bandwidth: -3 dB points, 2 Hz – 200 kHz Signal To Noise: >85 dB Gross Weight (Packed): 25 kg × 2 Dimensions: 250 × 430 × 360 mm (H × W × D)