I don't they are similar connection wise. I have a pair of the TRS-MS01's with the sub-woofer and they have a funky connector specific to the Tyros. The connector looks like an old Mouse Serial Cable and is mated to a 1/4 Phone jack. As a matter of fact, I wanted to use the MS01's to connect to another keyboard and NO CAN DO!!!
$39.99 is a great price, like DNJ asked, was the sub included?