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Learn how to make a stereo signal preamplifier using the CI4558 and some other basic components, with easy and practical assembly. Ebook Learn Electronics from Scratch: https://go.hotmart.com/Y91979399U Get your tools now! Hikari 50W Soldering Iron: https://mercadolivre.com/sec/2C5ikyB Digital Multimeter + Amperemeter Pliers + Voltage Pen (kit): https://mercadolivre.com/sec/21T7K9A #amplifier #audio #electronics #handmade #music #sound #yamaha #behringer