This is the best portable vocal booth by the most important criteria:

Sound quality, ease of assembly, can pack in a suitcase.  And as a new, unique feature: it allows two voice actors to collaborate on the same narration or movie dubbing.

It’s a great tool for your voice over work, especially when you travel.  It has 100% sound absorption inside the booth. It’s easy to set up with no separate parts to lose. There is a large internal capacity to fit all your recording equipment (even a 27″ monitor).

When folded for travel, the booth is a convenient 20 x 20 x 4 inches. When set up, the interior size is 20 x 20 x 20 inches (even a little more).