T-coil

A T-coil (Transformer Coil) is a type of electronic component used in audio and communication systems to improve the quality of audio signals and reduce electromagnetic interference (EMI). It works by electrically isolating and transferring signals between devices, preventing noise from external sources from affecting audio performance. T-coils are especially common in vintage or high-end audio equipment, television sets, and radio receivers, ensuring clearer sound and minimizing background hum or noise. Essentially, they help the audio signals stay clean and free from unwanted electrical interference.