The heart of the build is a preamplifier that runs off standard 48 V phantom power, and is responsible for both biasing the electret microphone element and acting as a buffer for the mic signal.

Instead, this design relies on a dual OPA1642 op-amp, with its low quiescent current meaning it’s perfect for running off phantom power. This means the microphone needs no batteries, and using a ...

Turn on 24 or 48 VDC phantom power to the XLR jacks, or 2.5V plug-in power to the mini jack. Whether you plan on plugging in a guitar and your favorite studio condenser mic to record a singer ...