What’s the difference between shielded and non shielded?
Noise is generated by many electrical and electronic products including fluorescent lights, refrigerators and cordless phones that are common in every modern home. These electrical signals also known as EMI (Electro-Magnetic Interference) and RFI (Radio-Frequency Interference) can easily find their way onto signal-carrying cables and can be amplified along with your audio signals. Line-level audio signals, such as those run between a CD player and your stereo amplifier, are not at a much higher level than the noise itself. When line level signals are amplified, the noise is amplified too and can be heard along with your music or soundtrack. A well-constructed audio cable will shield the signal-carrying conductor to protect the delicate line level audio from noise. Speaker level signals have already been amplified. Since the signal is so much greater than the EMI/RFI noise, it cannot easily be heard against your music or soundtrack. For this reason, speaker cables are normally not shiel
