I have a 1500+ and a 2000+. The results are amazing. They take my system back to the days before all the gremlins started polluting and affecting reproduced music playback. That's the best way I can put it. And I would not live without at least one of these units in my system. By the way, they make a huge difference on video as well. I too have experienced the drastic differences power cords make with the Pure Power units, and it is a mystery to me as well.
Regarding Ozzy's comment about repair service and communication: I needed to return the 2000+ because the fan was too loud. It was fixed and now works (is relatively quiet) just like the 1500+. The turnaround time was exemplary.
What I will say, though, is that communication is sometimes very poor from Pure Power: erroneous information (e.g., original shipping date was delayed a very long time, apparently due to disregard or awareness of what was reasonable - it turned out the promised shipping date was far too optimistic, given steps that needed to be completed first);long periods of time not getting responses; emails back and forth (unnecessarily) because my question was either not read carefully or (apparently) understood (or for some other, unknown reason)...etc. Although I don't really know, I suspect at least part of the communication problem stems from the fact the company is very small (two people?), and the product is so good and in demand. And, of course, this is certainly not an unusual thing in high-end audio! :)
In the end: GREAT product that took my system to (back!) another, much higher, level. Just remember that power cords do make a difference! (and the connection - power input - at the unit is 20 amp)
Regarding Ozzy's comment about repair service and communication: I needed to return the 2000+ because the fan was too loud. It was fixed and now works (is relatively quiet) just like the 1500+. The turnaround time was exemplary.
What I will say, though, is that communication is sometimes very poor from Pure Power: erroneous information (e.g., original shipping date was delayed a very long time, apparently due to disregard or awareness of what was reasonable - it turned out the promised shipping date was far too optimistic, given steps that needed to be completed first);long periods of time not getting responses; emails back and forth (unnecessarily) because my question was either not read carefully or (apparently) understood (or for some other, unknown reason)...etc. Although I don't really know, I suspect at least part of the communication problem stems from the fact the company is very small (two people?), and the product is so good and in demand. And, of course, this is certainly not an unusual thing in high-end audio! :)
In the end: GREAT product that took my system to (back!) another, much higher, level. Just remember that power cords do make a difference! (and the connection - power input - at the unit is 20 amp)