Instruction: Answer the given question using the supporting document.

Input:
Question: Can I plug in a cd Walkman or cassette Walkman?
Document: This little speaker puts out some sound for it's size! Even adults can get one 'cause it'll make ya smile! Hook it up to your ipod, MP3/CD player or even that Walkman cassette player relic you're still getting enjoyment out of! Great for the bedside, if you're tired of wearing earbuds/headphones, or even for travel, this will be perfect and very portable! Unless you're an audiophile who demands massive and impressive sound at all times, this sounds excellent for the type and size of speaker.
This is a really great speaker for the price. I have used it with my laptop, iphone, mp3 player, and my old portable cd player so far, and it worked really well with all of them.
love this little speaker! cute and functional! I can actually hear the movies on my computer now. awesome :)has option of aaa batteries and audio jack or you can plug into the audio jack and usb ports and save yourself some batteries.
I bought these to use with my iPhone when we are on the road to plug in so my son can have his "night night" music. They aren't super powerful but little kids don't need their music super loud. They are very cute and easy to use and work great!
I got this for my 10-year-old daughter for Christmas. It's one of her very favorite possessions. She loves to plug her iPod into it and listen to the music. It goes plenty loud enough, and the quality of the sound is fabulous for the price of the speaker. We are thrilled with it!
I go this speaker for my daughter and the panda for my son. They love it and use it all the time. I like that you can plug it in as well. Small but powerful. Plenty loud for the kids, but not so loud that it hurts their ears. Sturdy as well -- my kids have been a bit rough with theirs and they are holding up well.
Like everyone said, great sound. It doesn't blow you away, but it gets the job done. I use my  little koala when I'm cooking, cleaning or doing anything around the house. I usually plug my cell phone or tablet into it. I have to turn the volume up all the way on the koala and almost all the way up on my phone. It looks cool and gets the job done.
I was really surprised at the power this little speaker has for it's size. This is great. I am a Koala lover and this was perfect for me to take into my office and use on my computer to play music to fill my day. It's very easy to use and a great sound. The only thing I was a little disappointed in was the length of the cord to plug into the computer. I am getting an extension to be able to set the speaker a little further away from the hard drive.
I don't know about high powered but there is plenty of volume for me. The sound quality is good and the size is perfect for portability. Extra care should be exercised when wrapping the audio cord. Do this as little as possible or you will experience early failure of the audio cable. I use mine with batteries on the go and plug into my cell charger in the car when traveling. It's a cute conversation piece on my desk and surprises everyone with the quality of the sound from such a small package.
I bought this for my young daughter to plug her Mp3 player into. It works very nicely and has much better sound quality than I was expecting. For now we are plugging it into the wall with an adapter that we had. It can also run on batteries if she wants to take it outside. I would definitely recommend this to anyone looking for a cute little speaker that sounds nice. The Accessory Genie service was good and they have already followed up with me to make sure I was completely satisfied.
Answer: I know you can plug in a CD walkman.