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News – GZPA Reference 4PURE-SQ

It´s hardly possible to improve one of the best sounding amplifiers on the market. Nevertheless, GROUND ZERO selected some latest electronical parts and spent hours of listening to improve the parameters in detail! A new and improved pre-amp section, enhanced BIAS range and most of all a better Signal-to-Noise ratio deliver a clearly audible enhancement in Sound Quality of the SQ version.