Protecting AMP and Cleaning AC Power


I have been looking at the Furman Elite-15 DM i
to connect my tube amp, DAC and streamer. 

It seems clear from other forums that the DAC could gain some benefit from cleaner power.  

But it other forums also point out that AC filters could also limit the amp performance.

what cost effective approaches have others taken?
psickerson
For outstanding protection from surges and over and under voltage, get a Panamax MR4300. Same company as Furman. Just as good, not as expensive. The unit has high amp outlets and although is not 100% passive it is nearly 100% passive. It has basic line filtering too for noise, etc.
Another vote for PS Audio Premier Power Plant, it makes a big difference in soundstage and depth and the results are immediate when I take it out system and plug everything directly into the wall. I simply can't live without it in system.

 I live in the Chicago area and we have a lot of summer storms as well. I still plug my Audio Research Ref 110 straight into the wall. I would not have my amp turned on during a storm. Power strips can have a negative  effect on the sound.. There are power conditioners especially for amps. Shunyata made a 2 outlet version of the Hydra. They usually sell for around $300 

 I had an older PS Audio Power Plant, not the Premier. It did have a very positive on the sound. But I had a lot of problems with it kicking off after I got a tube CD player. I already had a tube preamp  You certainly could not plug a power amp into it. I do not know what kind of draw the Premier will handle.