Rode NTK or Blue Baby Bottle?

Question

Try a few different preamps (particularly at higher gain settings like you need for dynamic mics) and you'll start to hear differences. They're not as glaring as the differences between microphones tend to be or like A/D converters used to be.  Part of what makes this test work is that everyone knows what jangling keys are supposed to sound like so you don't need a lot of training to hear the differences.