+ The product corresponds to its description: "extension cable jack male / female 3.5 + volume control" Question connection, no problem, it's taken rated 3.5 male and female directly in the setting of the volume. No problem of false contacts Received on time, clean shockproof packaging -: The volume control is fairly random. It does not start from 0, or rather, it starts from 0, but once you leave the minimum position, we immediately equivalent to 10db signal only, instead of being progressive. (-10 Db is the attenuation of sound as compared to the maximum power) was therefore a reduced adjustment range. although this may be sufficient in many cases, it's a shame and it costs 1 star.