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Become a Collaborator of the Elétrica & Cia channel and have access to all courses and projects ✔ Basic Electronics Course ☀ See details ???? http://www.ciatuning.com.br/eletrica/... ► Become a Solar Entrepreneur in 40 days. Join the group of Entrepreneurs who earn from R$4,000.00 to R$30,000.00 per month. Unconditional 14-day Guarantee to become a SOLAR ENTREPRENEUR ???? http://hotm.art/XUWeym ???? Zap 21-989590472 ✔ Professional Voltage Inverter Project ⚡ See details ???? http://www.ciatuning.com.br/eletrica/... Hello, I'm ALEX LIMA and in this video I will be talking about Assembling a Preamplifier for Microphone and Sound Pickups. Another circuit from our project 50 circuits for beginners, ideal for working together with the sound amplifier circuit in this link • Assembling Mini Sound Amplifier for... List of featured topics: ✔pre-amplifier ✔pre-amplifier for dynamic microphone ✔electret microphone pre-amplifier ✔Pre-amplifier diagram for microphone A pre-amplifier (pre-amp), or control amplifier, is an electronic amplifier that prepares an electronic signal for further amplification or processing. The pre-amplifier circuit may or may not be housed separately from the device for which a signal is being prepared.