Instruction: Answer the given question using the supporting document.

Input:
Question: What about a power adapter? Can it be used with one?
Document: I have played MP3 via SD and USB memory and it has great sound. I have used AC and DC power, I did not try batteries yet. AM and FM radio worked fine, do not know about SW.  One minor issue, the FM station display is almost hidden above the SW bands, I wished it was just above the AM display.Great product and great price, shipped Prime. I have paid more just for a single foldup speaker, but it is much smaller.
I got this for an emergency portable radio, for in case the power goes out. The AM/FM radio works great, but I am disappointed because I can only get in one or two shortwave stations, and they don't come in very good. I have not tried using the USB slot yet.
Also this came with the cheapest ac power cord I have ever seen, had to bend the prongs a few times to make them contact in the outlet.For the price, I like it and will keep it as is. I like that it uses 4 D cell batteries, should power it a long time.When playing MP3's it has a super bright red LED that flashes, a little piece of duct tape fixed that.
There are two speakers on this one, but there's no mention on here about it having stereo sound. I thought it would be mono, but it's not...not entirely anyway.
I can't return things to Amazon because it is usually a big pain. The one thing good is that they kept after me to write a review. I am not sure they knew what they were really going to get in that review.
This is a wonderful surprise, I had been looking for a boombox that had a function to play radio and usb. To my surprise I found this one. Not only can it do radio, but it's a world radio, has a usb slot, and if you load music straight to the usb drive it'll play it directly, and quite clearly. The speakers are wonderfully powerful and crystal clear. But not only those, it also has an SD card slot for the same option.
I bought this just because I like transistor radios. I have several. This was cheap and is cheap. If you want a nice radio to listen to buy a better one. It just sits on the shelf and looks like a radio for me so I don't care that it works crappy. It is hard to tune, drifts and don't pick up much. It probably would have cost another buck to have it work right.
I have loved radios all of my  life. I have taken them apart to tune them and enhance their reception.This one however is not worth the effort. After a couple of weeks the MP3/USB stopped working. Thenone of the speakers became intermittent because of the earphone jack. I left batteries in it for a weekbut they must have been trying to charge them because they started leaking. The AC plug needs the prongsbent just so it doesn't fall out of the wall outlet.
I had to pick one of these up to try it out at the current price and Prime shipping. The radio is very limited as a FM radio, not to mention a SW radio. The one I have doesn't pick up any AM stations and it seems the SW bands all overlap with each other and the radio can't lock-on to any one signal. I haven't tried the USB or Card reader...don't plan to at this point. I cannot recommend the radio aspect of this item.
We just needed a way to play MP3s, especially audio books. This works in the kitchen and in the garden. The radio feature is very adequate although not US friendly. Can't imagine where in the world it would be. But, that's OK.  For the price this is the best value I purchased all year. Don't imagine for this price you are getting a high fidelity sound system. But, it good enough for all but audiophiles. Plays downloaded audio books perfectly--clear as a bell.
Answer: As long as the adapter puts out the volts/amps/etc that it requires, and the female plug matches, yes. But it comes with a power cord.