XLR
Definition
A professional audio connector standard using a 3-pin (or more) circular connector for balanced audio signals. XLR cables carry audio on two signal conductors plus a ground, providing common-mode noise rejection that makes them resistant to electromagnetic interference over long cable runs.
Context
XLR is the standard connector for professional microphones, preamps, mixing consoles, and studio monitors. In newbie-questions, beginners frequently ask about XLR vs 1/4” (TRS) vs USB connections:
- XLR microphones connect to audio interfaces or preamps and require an interface with XLR inputs (and Phantom Power for condensers)
- USB microphones bypass the need for an interface but offer less flexibility and lower quality than XLR setups
- TRS/TS (1/4”) cables are used for instruments, line-level signals, and headphones
Expert consensus in newbie-questions: start with an XLR microphone and a proper audio interface rather than a USB mic — the investment pays off as you grow.