The Apple website offers reviews on all its products. Alternatively you may check third party review websites like whathifi which may allow you to compare speakers.
Check here for some well-reviewed iPod speakers: http://www.cnet.com/topic-reviews/apple-ipod/speakers/volume.html. Altec Lansing has always been my choice for good products at an affordable price.
Mini Speakers for the iPod are available directly from the Apple Store. They can also be found at Best Buy, Amazon, Radio Shack, Staples, and Target.
Portable iPod speakers came out after the introduction of Apple's Ipod, which came out in 2001. The speakers are part of the accessories that can be used in conjunction with the apple iPod.
To find information about an iPod touch, go to the apple website where it has information on every single one of their products, and reviews for them as well.
Any set of speakers that have the Apple Connector will work. You can also find adapters that will allow your iPod to connect to potentially any Bose Speaker on the market.
There are many stores that offer JBL ipod speakers. You can find them at Amazon, BestBuy, The Apple store, Target store, and of course, the official JBL store.
usually a good but obvious choice is apple.com.also at http://www.4homespeakers.com/ipodspeakers.html they have many portable speakers compatible with ipod but i would go with apple.com
There are a lot of different places where you can find reviews for an iPod Nano. A good place to start would be the consumer report because they have all of the electronic products and if they are good or not.
iPod speakers can be purchased at Amazon, Target, the Apple store, or Best Buy. For the best deals on iPod speakers, please check out Amazon. Normally you can get them for cheap (new or used).
Speakers for the Ipod Nano can be purchased at the Apple Store, either online or at the regular store locations. Many of their stores are located in shopping malls. There are also many other online stores where they can be purchased, such as these dot com companies, amazon, overstock, or tigerdirect.
You can buy speakers for an iPod touch at any place that sells the iPod touch such as Best buy, Wal-Mart or even the Apple stores You can also look on their web sites to buy speakers for an iPod touch
The best places to find speakers for an iPod of any type would be an electronics store. Best Buy and Apple are probably 2 of the best places to find something, but if you need something cheaper, you could probably easily find them at Target, Kmart, or Wal-Mart.