If you are in an apartment building or condo you may benefit from conditioner as there will very likely be a lot of noise in your AC, and conditioner may improve sound even as it limits current. If you are in a single family home near a transfer station with your amp on a separate line and breaker in your home, your power is likely less corrupted and going straight to the wall should sound better. As suggested previously, just try it both ways if you can get a conditioner on loan from The Cable Company or other source.
Mitigating decision is whether or not you are in an area prone to electrical storms and at risk of frying your investment with no protection. I lost a TV that way.
