Can RCA cables be used for audio?
The RCA connector is a type of electrical connector commonly used to carry audio and video signals.
Does RCA to aux work both ways?
A: yes, cable is bi-directional.
Does RCA to aux affect sound quality?
In most cases there is really no difference between the cables as the only difference is the signal that they actually carry. A good example of this is the RCA cable. The RCA cable is typically composed of 3 cables that would carry 1 for video and 2 for audio (left and right channels).