This Whirlwind Direct Box with DIMax Transformer has a minor issue: there is tape residue on the unit. Despite this, it's a great product for audio applications.

Using this Whirlwind Direct Box is easy. Just connect it to your audio device following the standard connection methods. When using, make sure the connection is stable to avoid audio interruptions. As for maintenance, you can gently clean the unit with a soft cloth. Note that when cleaning, don't use harsh chemicals as they may damage the device. If you notice any further issues with the tape residue, you can try using a mild adhesive remover, but test it on a small, inconspicuous area first.