The 10 Best USB Microphones
10. Neewer NW-7000 Professional
9. Blue Snowflake 1899
8. Cad U37 Studio
7. Audio-Technica ATR2100
6. Blue Spark Lightning
5. Blue Yeti Silver
4. Apogee Mic Plus
3. Audio-Technica AT2020
2. Blue Snowball
1. Rode NT Condenser
You can accomplish a lot with just a little pressure. Squeeze a crystal like quartz, for example, and it'll produce a steady electrical charge out either end. Noise vibration is a kind of pressure exerted through the air in the form of sound waves. That's what causes a rolled up piece of paper to project your voice further than it could go on its own. You pressurize the paper with your voice and that vibration travels outward into the air.
Microphones work not by amplifying sound the way our paper megaphone above would, but more like a human translator would interpret a speaker from one language to another. Words come in through one opening, translate into electrical impulses, and reemerge anew. In the case of the microphone, they are amplified and recorded, where the translator simply speaks them in a new tongue.
When you sing or speak into a microphone, a small diaphragm usually made out of plastic vibrates in direct proportion to the pressure your sound waves put on it. That vibration transfers to a metal coil that's both attached to the diaphragm and also wrapped around a magnet. That magnetic interference produces a signal in the wire attached to its other end and sends that signal down the length of microphone cable to a given output device.
Some of the microphones on this list are condenser microphones, which means that their diaphragms vibrate a capacitor before using the magnet beyond to translate the vocal pressure into an electrical signal.
What makes these USB microphones unique is that they interact with your computer's sound card, sending the signal either directly via USB cable or through an intermediary XLR cable to a small pre-amp before reaching your computer. In either case any power needed by either the microphone or the pre-amp comes to both through the USB cable itself.
To Each His Or Her Own Sound
It may be tempting to despair over the idea that you couldn't really evaluate the quality of any of these microphones without hearing them. After all, different voices are going to get different responses from the same microphone. Thom Yorke from Radiohead, for example, uses an insanely expensive large-diaphragm condenser microphone because its stabilization of certain frequencies in the upper register helps his naturally nasal voice sound more palatable to the average listener.
Now, if you aren't up for spending $4,000 on your microphone (and additional hardware to wire into your computer via USB), you still have tremendous options laid out before you, and you don't need to worry too much about how each will treat your voice.
The real concern should be what your intended use is for each microphone. As much as sound plays a role in this particular point, you'll also want to consider ergonomics. Take the Snowflake and the Snowball by Blue, for example. Each will produce lovely tones for speech if you want to run a good podcast or do voice-over work from home, but neither makes for an effective interview mic in the field. Their shape is all wrong for the handling you'd need.
The more expensive microphones on this list are the ones that resemble traditional studio vocal mics, and they're stellar for tracking your band's vocal melodies as well as picking up acoustic guitar sounds and some lighter percussion. None of these mics is really built for tracking heavy electric guitar or drum sounds without running into a little natural distortion of their own. But if the Kinks were willing to slice up their amps with razor blades to get their signature sound, maybe pushing a USB mic to its limit will get you something special.
Take a close look at connectivity, as well. Not all of the microphones on our list have completely removable USB cords. One or two are hard-wired, so when–and I mean when–that cord wears down, your otherwise perfectly good microphone becomes useless.
Persona Non Grata
Reaching incredibly far back into the heyday of the Greek theatre, actors often wore masks as part of their performances. The masks served a dual purpose. They helped audience members identify and discriminate between and among characters, and they also helped project the sound of the actors' voices throughout the amphitheater.
The masks were called personae, a combination of Latin roots for through (per) and sound (son). Literally, the thing through which the sound travels. These were the very first known devices for amplifying the human voice.
Nearly 2,500 years later, the microphone made its debut. Invented by combining the efforts of inventors John Philipp Reis and Alexander Graham Bell, the late 19th century saw the very first transmission of the human voice into a usable electrical current that could be transmitted and amplified at will.
Over 100 years later, a consortium of computer manufacturers collaborated to reduce the variety and complexity of the inputs and outputs plaguing computer hardware design in the 1990s. The result was the introduction of the USB format in 1996. In the intervening 20 years, the format remains the standard despite several attempts to surpass its speed and convenience, and that speed has only increased from a maximum 12 megabits per second to today's impressive 7.2 gigabits per second.
Given the speed, reliability, and ubiquity of USB in modern computing, it serves as the perfect intermediary for electronic audio signals.