Are any passive (or active - unlikely) components used in the 3.5mm mini stereo headphone (TRS) plug to RCA audio plug converter cables, such as this one ?
Asking because, during a quick search I came accross some DIY cable post, where a poster commented that they find the audio volume to be extremely low when using such a cable, indicating serious attenuation.
For line-in/line-out (on PC), I found the following Wikipedia entry that talk of the electrical characteristics, but nothing (so far) for RCA audio connectors and the 3.5" mini (TRS) headphone plug.
Also found this interesting post, but it is in reference to RCA to SPDIF conversion (chain), but still not much helpful with respect to my question.