4s dock extender cable (small plughead)

For my iPhone4s, I'm looking for a dock extender cable that transmits audio. (I'm plugging a microphone into it with a dock connection.) I have a Lifeproof case, so am looking for the cable with a small plughead.

There are tons of cables online with the big plughead, but i'm looking for one with the smaller head. (The bigger plug bends the dock door on the Lifeproof case, which I don't want.) The only thing I've found is this picture, and a visit to the website turns out to be a big plughead cable.

anyone know where I can get one of these?

Did you check on HDMI Cable, Home Theater Accessories, HDMI Products, Cables, Adapters, Video/Audio Switch, Networking, USB, Firewire, Printer Toner, and more! - Monoprice.com They have a large selection of almost any kind of cable, connector, etc.