Sugden Masterclass MPA-4 Class A Symmetrical Balanced Mono Power Amplifiers + Masterclass LA-4 preamplifier, Ex-demo. Immaculate condition. Absolutely no signs of wear. Full package and accessories. Free shipping inside EU. No import charges - we are lcoated in EU. Description: Sugden Masterclass MPA-4 Class A Symmetrical Balanced Mono Power Amplifiers have been developed to present a holographic three dimensional soundstage where the listener can almost walk in and touch the musicians.Tremendous headroom is available in which to develop a wonderfully dynamic portrayal of music in all of its moods.The MPA-4 has facilities for asymmetric (Phono/RCA) or balanced inputs (XLR); the latter utilising a virtual transformer (discreet) balanced input circuit.The power amplifiers are symmetrical, current feedback, DC-coupled, gain stages with servo controlled DC off-set and multi emitter output devices.In the balanced mono amplifiers the two power output stages of the stereo power amplifier are connected in balanced mode giving a mono amplifier.The mono power amplifiers give single channel power twice that of the stereo power amplifier.Among some of the gains of the balanced configuration are a much lower noise floor, even greater dynamics and a rock solid musical sound stage.Facilities:Inputs: Mono Balanced.Outputs: Single pair multi way locking binding posts.Specifications:Input Sensitivity : 1 Volt for full output.Power Output : 165 watts into 8 ohms both channels working.Frequency Response : 15Hz to 30 kHz +/-0dB.Bandwidth : 2Hz to 200kHz -3dB points.Signal to Noise : >85dB.Nett Weight : 50kg (25kg each).Overall Dimensions (including terminals) : 250mm x 430mm x 360mm (HWD) by two amplifiers.