We’re talking of course about the carbon microphone amplifier, a piece of telephone technology which made its way into consumer electronics. The carbon microphone is a container of loosely ...

It has a single pickup pattern mic with a hardware gain/level control, an in-built headphone amp with volume control, and a mic mute button. However, Razer’s option is a little cheaper ...

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 ...