Overview
Most mic buying guides recommend condensers as "better." That's wrong — the best mic is the one that suits your environment. A dynamic microphone in a noisy room will beat a condenser every time. This guide explains why, and gives you a clear framework for making the right choice. Some links in this guide are Amazon affiliate links; if you purchase through them, we earn a small commission at no extra cost to you.
What You Need
- Knowledge of where you'll be recording (quiet studio, noisy home, live stage)
- Your budget
- Whether you need USB or XLR connectivity
Steps
How dynamic mics work
A dynamic microphone uses electromagnetic induction — a coil of wire attached to a diaphragm moves through a magnetic field when sound hits it, generating an electrical signal. The moving coil mass makes dynamic mics physically robust but slower to respond to fast transients. They require no phantom power, have low self-noise, and are more tolerant of loud SPLs. Classic examples: Shure SM58, Shure SM7B, Electro-Voice RE20.
How condenser mics work
A condenser microphone uses a charged capacitor — sound moves a thin diaphragm relative to a fixed backplate, changing the capacitance. This mechanism is lighter and faster than a moving coil, giving condensers superior high-frequency response and transient detail. They require 48V phantom power and are more sensitive — they pick up everything including room noise. Classic examples: Neumann U87, Audio-Technica AT2020, Rode NT1.
Key practical differences
Noise rejection: Dynamic mics have higher off-axis rejection and lower sensitivity to background noise. Condensers pick up everything. Frequency response: Condensers have wider, more extended high-frequency response — sound more "airy" and detailed. Proximity effect: Both exhibit bass boost when close, but it's more dramatic on condensers. Gain requirements: Dynamic mics need more preamp gain (the SM7B needs 60dB+ gain) — a basic interface may not be enough.
Which to choose by use case
Noisy home / untreated room: Dynamic mic — the lower sensitivity means background noise stays lower in the mix. Treated home studio / closet booth: Condenser — the quiet environment lets its sensitivity be an asset. Podcasting on the go / co-hosted shows: Dynamic — more forgiving of distance variation and ambient noise. Voiceover / audiobook narration in a treated space: Condenser — the detail and air are worth it in a controlled environment.
Recommended models at each budget
Under £100 dynamic: Samson Q2U (USB+XLR), Audio-Technica ATR2020. Under £100 condenser: Audio-Technica AT2020, Rode NT-USB Mini. £100–£300 dynamic: Shure SM7dB (built-in preamp), Electro-Voice RE20. £100–£300 condenser: Rode NT1 5th Gen, AKG C214. Professional: Shure SM7B with Cloudlifter (dynamic), Neumann TLM 103 (condenser).
Pro Tips
- The Shure SM7B is the most popular podcast mic in the world — but it requires a quality preamp that can supply 60dB+ clean gain. Pair it with a Focusrite Scarlett Solo or a Cloudlifter.
- Ribbon microphones are a third type — extremely detailed and fragile, used in professional studios. Not recommended for home setups.
- USB microphones contain a built-in audio interface. Convenient, but they limit your signal path options compared to XLR mics connected to a separate interface.