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Swiss manufacturer of hand-crafted preamplifiers and power amplifiers. The company was created by Herve Deletraz and his first cousin Serge Roche, and was born out of their unconditional love for music and its reproduction.  The fruits of two decades of research and experiments, darTZeel products are aimed at discerning music lovers in pursuit of audio excellence.  Far from following patterns and trends, their machines are first and foremost thoughts, developed and built as valuable and unique musical instruments. darTzeel is the only Swiss audio manufacturer allowed to stamp their products with the label "Manufacture Suisse", an indisputable testament of their excellence in engineering.