Phono Preamps for Sampling: What You Need
Turntables output a phono-level signal that needs RIAA equalization and gain before it hits your interface. If your turntable doesn't have a built-in preamp, you need an external phono stage. This guide explains what to look for and how to wire it into your setup.
Phono vs. line level
Phono output is low level and EQ'd for vinyl (RIAA curve). A phono preamp applies the inverse RIAA curve and boosts the level to line level so your interface can record it properly. Without it, the signal will be quiet and tonally wrong. Many modern turntables have a switchable built-in preamp; if yours does, you can skip an external one.
Standalone preamps and interfaces
Standalone phono preamps from ART, Schiit, and others sit between the turntable and your interface. Some interfaces have a dedicated phono input (e.g. certain Focusrite models). For sampling, a simple stereo phono preamp is enough; you don't need high-end audiophile gear. For the full chain, read best turntables for sampling under $300 and vinyl to digital recording.