thick case: need pass-through extender for dock (and headphones)!

iphone cases danged thick (i have speck), when sit them on dock plug (like, 1 have in car), can't make connection. need use extender deal can fit inside small opening, , 1 have looks stupid , don't think provides best connection. (gotta fiddle make sure audio sounds ok.) so, what's best pass-through dock extender thingy you've found out there? (or same?)

(this type of thing



same headphones... headphone opening in case slim older headphones won't fit. know can 3-foot extender cable small plug sleeves, there headphone jack extenders don't have bunch of cabling?

maybe one?



or this:

 

i received radtech dock extender amazon , works advertised. i'm using dock http://www.walmart.com/ip/memorex-ipod-speaker-system-dock-black/20440475 vapor pro case.

 

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