Linjeingång

Linjeingång, often translated as line input or line level, refers to a standardized audio signal level found in consumer audio equipment. This level is significantly higher than microphone level, making it suitable for direct connection between many audio devices without the need for preamplification. Typically, line level signals are around -10 dBV for consumer electronics and +4 dBu for professional audio equipment. The difference in voltage translates to a higher signal strength, which reduces the susceptibility to noise and interference over longer cable runs.

Devices with line outputs, such as CD players, digital audio players, and the output of many preamplifiers, are designed to send signals at this standardized level. Correspondingly, devices with line inputs, like amplifiers, mixers, and active speakers, are designed to receive and process signals at this level. Using line inputs ensures that the audio signal is clean and at an appropriate strength for further processing or amplification within the receiving device. This standardization simplifies audio system design and interconnectivity.