Learn how to design and build a production-ready audio compressor in this comprehensive DIY tutorial. Explore key components and techniques including gain reduction indicators, full wave rectifiers, attack mode switches, variable input and make-up gain, and LED-based VU meters. Follow along step-by-step to assemble your own professional-grade audio compressor, with detailed explanations of each circuit element. Gain hands-on experience in audio electronics and signal processing while creating a functional Eurorack module for your synthesizer setup.