Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Is it compatable with an iphone5? Do I need an adapter?
Document: The speakers overall at around 2USD is a steal for all except the need to be around a USB type of power source. Sure you can buy an adapter for an USB to outlet connection but could be much better off using batteries. The sound is great to an extent that is worth more than you paid yet I could say the aluminum speakers could even that out for you.
For $14 including shipping, these folding speakers can't be beat. The sound quality is decent (better than my laptop speakers), the design is clever, and the price is phenomenal. The only downside, as someone else noted is that they don't come with a 6V DC adapter, so you can't power the unit from a wall outlet. I suppose you can buy one separately somewhere, but if you don't, you'll need to power these using 4 AAA batteries or the USB slot in your PC.
I ordered these speakers for very limited use(yoga room background music), not really expecting much based on the price. When I got them I plugged in an adapter and my portable cd player and was absolutely shocked. The sound was much better than I ever really expected. There is distortion at higher volumes but I don't need them that high anyhow. I must admit, it is an added bonus that they are battery operated, although I don't use them that way now.
This arrived in decent time, however I was disappointed with the product. Note you need a special cord, or else it takes 4 triple-A batteries.
Sounds bigger than it is, you probably won't have to turn it all the way up. Rugged enough to be tossed about in a backpack. (I do sometimes wish it weren't as chunky folded up, but this design easily protects the speakers. Too big to carry in a pocket, you'll need some kind of bag to carry these everywhere, like I do.
I have to pull it out and put it in crooked or take the case off, which is something i don't like doing.This is a cheap speaker set and is not the same quality as a Bose or some expensive system, but if you need something very inexpensive that will suit a small need, i would recommend it. As far as for my 10 year old sons iPod, I plan on getting him something a lot nicer than this.
Very impressive. I've owned for about 6 months now and use all the time. Unfortunately my Toshiba laptop didn't come with the "great" speakers that some do, and I need a boost from time to time. This little guy does the trick by leaps and bounds. Every time I pull em' out everybody wants to know where I got them. When I tell them I got them for less than $5 they can't believe it. Great for a smart phone.
good while they worked (about 6 months), but used lots of batteries and didn't work with the A/C adapter I got to use with it.
Very happy with this product! Buying another pair when mine wear out. Only con: I wish it had an AC power adapter so it could be plugged into an outlet. Anybody that knows of one to fit this product, message me :)
Used these speakers exclusively with an A/C adapter. About a week before its third month aniversary the plug receiver in these speakers became loose and will not stay connected to the power cord. Other than that I am very satisfied. I have ordered another and will update this review later.
Answer: The speaker is an auxiliary input, it is compatible