What is line level and digital connectors?
top Line level refers to a signal that is essentially unamplified. The line-level signal may be from a Tape Deck, CD Player, DVD Player or Pre-Amplifier. Most stereo systems use RCA jacks for line-level input and output. The interconnect cable used is usually shielded to prevent pickup of hum and noise. A properly shielded RCA interconnect with good connections is usually quite immune from noise pickup. Powered subwoofers often have line-level inputs as well as speaker level inputs. Some systems use balanced inputs and outputs which are terminated with XLR connectors. Balanced systems are common in pro-sound applications because the XLR connector is much more “secure” than an RCA and balanced runs are almost completely immune to any kind of interference.Digital connections are often made between a source such as a CD transport and a matching DAC. These connections are usually AES/EBU (XLR) or RCA ended.
