The API 16 provides transformer based isolation for each individual outlet, therefore, it can be current limiting if you exceed the rated input. It did a decent job in its day, especially if used with front end equipment with low power requirements. Excellent for digital equipment and eliminates the digital high frequencies from being injected back into you power lines.
Audio Power Industries Power Wedge 16
I have possession of a Power wedge 16. It is not the Ultra version which I understand to have separate transformers for each outlet. I assume that this mode doesn't. l am just wanting to hear from anyone having experience with this power conditioner. I have not yet tried it out in my system. Thanks in advance for any information.