Adam Hall PCL 10 Pro Power Conditioner

I have had very little luck with this, overall I would say it seems more suitable for maybe a PA system, than for home studio use.

When I had my computer equipment powered through this, instead of reducing emissions, it acted as a rebroadcaster, meaning I had the interference from the computer hitting me from both sides, instead of reducing it.

This seems to be a common issue with power conditioners, not specific to this particular model. The conditioner tries to remove noise from the mains, but if you plug in gear that itself produces noise, it will instead create a common grounds issue, instead of removing anything.

Aside from that, however, the unit itself produces noise hitting everything around it, simply by being powered on with nothing plugged in it produces noise.
Even with balanced cables, it adds a high pitched whine and hiss to the signal, meaning you have to keep all audio gear away from it.

The only way I can see this being useful, is if you keep it completely separate, plugged into a separate power circuit, and physically far away from instruments or audio cables, which defeats the purpose for my intended use.