Originally Posted by Canman
The Singlepower has a warmer sound than the Raptor
I have only heard the PPX3 for about 1 hour at a meet and have had the Raptor for almost a year. They are both very fine amps both sound and build. I have not seen the PPX inside only outside. I would be happy with either amp. The Raptor is a two box design so that should add to the blackness of the sound which is very black do to the separation of the components. Both amps are very musical and very involving. They make my setup very transparent. Again the exact characteristics of the sound depends on the tubes used. The PPX and Raptor use very inexpensive tubes while the MPX uses much more expensive ones. The only real way to decide is to audition the both amps with the rest of your setup preferably in a comfort of your home. I know Ray has a demo program so you can check the amp out before you buy it.