Is there a significant difference between the PC12+ and the PB2000 to explain the $400 difference ?
MartinLogan Motion 40s / 30 / LX16s
Marantz SR5007 / UD5007
exercise room: MartinLogan LX16s / SVS SB2000
The PC12-Plus seems to have about 1.5x the output of the PB-2000. And the specifics already mentioned
Not quite twice the power.
PB-2000 is 500 watts RMS continuous. You are thinking of the PB12-NSD that it replaced, which was 400 watts.
Samsung KS8000 65", Sony UBP-x800
Front-Center-Surround, Pioneer: FS52-C22-FS51