well good luck finding one if you need one.. the one that came with my cube died.. and there are no parts available from TDK.. but there is a cheap replacement on Ebay.. same requirements.. this is just information to help if your PSU dies like mine.. just look up HP C4557-60004 through Ebay search results.. for average 8 bucks you will get a PSU that works 100% with the 2 speaker and cube TDK boomboxes.. sure it's a bit more bulky.. but it is 100% compatible.. been using one the last few weeks no issue.. this is just to help if anyone has a bad PSU or wants a spare for another room..