The TR-2 was a compact analog audio mixer. The manual is attached below.
Fun fact: we named this the TR-2 because we sketched out the original design on the back of a placemat at Tony Roma's across from the Las Vegas Convention Center after talking to some people at the NAB Show back in the day. It became the TR-2 when we decided to go with the second sketch.
It's proof that if you say to us "wouldn't it be cool if you made this..." at the NAB Show and we agree with you, we'll probably do it. Tony Roma's and this console are long gone, but we're still making cool stuff.