Pi_Fanatic wrote:The 4 pole pinout for the Pi Model B+ Audio / Video connector is not a standard. The pole position is as follows
From top to bottom:
Pin 1 Video
Pin 2 Ground
Pin 3 Right
Pin 4 Left
I have attached a helpful diagram. Not all off the shelf 4 pole audio / video cables will work. Most 3.5mm audio cables will work although the L/R might be switched on some.
Its the Ipod standard. It means you can buy cheap and plentiful iPod compatible cables / adapters, while at the same time you can plug in standard ear buds/headphones.
To me this sounds like the best and in the end cheapest solution.
There are also cables with different wiring orders in use, but as long as they have GND at the correct point, you can simply swap the RCA connectors to compensate.
As for using TWO 3.5 mm jacks, there simply isn't place for them!