Sugden Masterclass SPA-4 Stereo Power Amplifier


Brand Sugden

Masterclass SPA-4 Stereo Power Amplifier 

The Sugden Masterclass SPA-4 power amplifier is available for demonstration in our store by request.

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. 

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 balanced

Outputs                                  Stereo pair multi-way locking binding posts



Input Sensitivity                      1Volt for full output

Power Output                         75 Watts into 4 Ohms both channels working

Frequency Response             +/-0dB 15Hz-30kHz

Bandwidth                             -3dB points 2Hz-200kHz

Signal to Noise                       >85dB

Gross Weight  (packed)         25kgs

Dimensions                           250 x 430 x 350mm (hwd)