Is there a sound system that you can plug in an iPhone etc.to?

I don't want a wireless speaker for the iPhone, I want an actual sound system with the ability to connect my iPhone to. I just can't seem to find one or word it right to search google for it!

An iPhone, iPod, iPad, or any similar gadget
can be connected to almost any home (or car) stereo system
via a line-level input (Aux, Tuner, CD, Tape, etc.).

[You may need to buy a cable with suitable connectors at each end.]

You could use powered "computer speakers".

There are dedicated "docks" for MP3 players.

Other possible arrangements may also be found.

  • Where can I get a sound system for my iPhone with portable speakers? I want a dock for my iPhone 4s, possibly a 5 in the future. I want the dock to be like a stereo and have at least two speakers that I can place in different spots around my room.(So I can rock out) If you get the idea, then give me a few on where I can get a cool one!
  • What's the best surround sound system for music? I'm tired of having iHomes that break and/or have horrible quality, so I was just going to get a surround sound system that i can use for my iPhone. What are some good surround sound systems for mostly music and somewhat movies?
  • What's a good sound stereo system? I'm looking for a sound system that consists of maybe 4 or 5 speakers and a sub woofer. I want one that you can plug into the wall for power and plug my iPhone into it. Where can I find something like this?
  • Is there music recording equipment that you can plug into your Mac? My boyfriend's birthday is coming up and I'd love some help. He plays the guitar and is a songwriter, but only uses his iPhone or photo booth for the recordings. Is there some sort of music device out there that would allow him to plug a guitar and a mic into his Mac and create a high quality mp3? He plays in a band with one other musician so if they could both plug in their guitars that would be amazing.