+ Building a HiFi Test Amplifier 123toid, November 25, 2019January 3, 2021, Blog Posts, Free plans, audiophile, budget audiophile, diy amp, diy amplifier, diy amplifiers, diy audio, diy plans, hifi, high fidelity, 0 Today I am going to be teaching you how to build a HiFi testing amplifier. The first thing you...