This Whirlwind Director+ Direct Box with DIMax Transformer is a great find, though there's a bit of tape residue on the unit.

Using this direct box is easy. Just connect it to your audio equipment as you normally would. Make sure all the connections are secure for the best sound quality. When it comes to maintenance, gently clean the unit with a soft, dry cloth. Avoid using harsh chemicals as they could damage the device. Keep an eye out for any loose connections or other issues. And remember, the tape residue on the unit doesn't affect its performance, but you can try to remove it carefully if you want.