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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. The SPA-4 is a stereo version of the MPA-4 and uses the same class A circuit. The only differences are power output and the additional flexibility of both single ended and balanced inputs. Not every music lover can accommodate two substantial power amplifiers in their listen space, so a single SPA-4 could be the solution. One of the noticeable abilities of the SPA-4 is how well it works with smaller loudspeaker designs as well as large ones. Control and soundstage are two key elements of the SPA-4 making it a fine power amplifier.
Inputs Stereo line level, stereo balancedOutputs Stereo pair multi-way locking binding posts
Input Sensitivity 1Volt for full outputPower Output 75 Watts into 4 Ohms both channels workingFrequency Response +/-0dB 15Hz-30kHzBandwidth -3dB points 2Hz-200kHzSignal to Noise >85dBGross Weight (packed) 25kgsDimensions 250 x 430 x 350mm (hwd)
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