The problem with many iPod docks is quality, specifically audio quality. There are a gazillion cheaply made units with a propoensity for distortion once pushed beyond the middle part of the volume knob. But not all models befall this well known issue. We've been looking at the higher end category and discovered there are a few iPod speaker docks that offer above average to excellent sounds (though we'll likely stick with our Dieter Rams inspired DIY speaker for now).

Arcam rCube
Looking like a simple cube, the Arcam rCube does more than looking square. Very compact powered speaker and also portable with the added bonus of wireless convenience. It has a built-in rechargeable battery with an AC adapter too. Full 90 watts of music power and 270 degrees of sound field. Tweeters are clean and crisp and bass is deep and accurate.

B&W Zeppelin Air
The cool part about the updated Zeppelin, is the "Air" part. Thanks to Apple Airplay Technology, you can stream music direct from your computer to the B&W Zeppelin. Sound Quality is amazing, consisting of two aluminum dome tweeters, two midrange speakers and a woofer for the low tones. Each of these five speakers is powered by its own amplifier for a more accurate and responsive performance. And we just love the shape. Totally out of the ordinary.

Bose SoundDock 10
With a name like Bose you know you are probably getting a quality product. Now with a sleeker design, it just let you slip your iPod or iPhone into the docking station and you are ready to enjoy deep bass and sharp tweeters. It does feel and sound like a bigger system. You also have an aux line in for all your non-apple products, like mp3 players, CD players or even to connect it to your TV and use it as an impromptu home theater system.

Geneva Model M
We are very excited with the Geneva. The look is amazing and the sound is even better. We are sad that it doesn't support wireless streaming out of the box, but we are working on a sleek way to incorporate at least bluetooth streaming. Two of the features that we get more excited, has nothing to do with the sound quality: The motorized dock station (that resembles the pop-up headlight of a Lamborghini Miura) and the LED behind the grill indicator, that let us know the mode where the system is at the moment.
Other great audio alternatives:
• Philips DS9000
• Bang & Olufsen BeoSound 8
• Parrot by Philippe Stark
Comments (5)
These docks are a cut above many of the cheapie iPod docks available, but let's not overstate the case. They still don't stack up to even an entry-level hi-fi system (in the sound quality department). I've listened to each of the docks pictured in this post. While they are able to play louder without distortion, they simply can't produce the stereo imaging two separate speakers can. For less than $500, you can get a good pair of bookshelf speakers (check out the $149 Pioneer SP-BS41s reviewed in Stereophile) and a stereo receiver (the $299 Denon DRA-297 is a good start). You'll have a system that blows all of these docks out of the water, plus $50 left over to buy more music.
BTW - I get it. I know many people only want one music box in their living room, as opposed to 3+ boxes along with all their associated wires. To each his/her own. But with convience frequently comes compromises. And in this case, the compromise is sound quality.
Yes, more "high end" (this is debatable, especially when the company name is Bose, but oh well) companies are jumping on the iPod dock bandwagon. But none of them can defy the laws of physics and produce a passable stereo image. There are plenty of mod looking speakers out there- they don't have to look like your Dad's stereo. Some nice amps are coming out with docks built in. Even the simplest 3-piece setup would run rings around these things in terms of sonic quality.
I second what these others who have commented have stated. Two thoughts:
1. Vintage audio is awesome looking and relatively inexpensive as well. Many systems would sell you an ipod dock to go with them.
2. Think about the most bang for your buck/longevity. If your going to spend the money, do you see yourself holding onto a $600 unit which you can't change the speakers for, you can't change the options other than using an iPod. With a component stereo, you can swap any part of your system out when you've got the money 5 or 10 years down the road.
When I'm sitting on my couch in front of my Zeppelin Air and watch a movie, listen to my iPod or a good old vinyl I still haven't noticed a lack of stereo effect...
on the contrary, the sound fills up the room without loss of quality.
It just depends on how you configure the devices in the room
these docks are great for ambient 'non serious' listening but nothing more. i've got a zeppelin for background music- its ok, i use it when on the computer or doing housework. when its proper listening time, the musical fidelity/monitor audio system is employed.