I've look on the Sony site and a bunch of other sites, but cannot find out if you can plug in a power adapter to this unit. I have about 300 cassette study tapes that I need to load onto the computer and convert to CDs. Presently I don't have a cassette player of any kind that works so am looking to find the cheapest route to copy the cassettes onto other cassettes and onto CDs. Have been looking at dual cassette player/recorders primarily, but this little Walkman would be great for my son to use to listen to lessons at work with tiny headphones. Any suggesstions will be greatly appreciated.