Hmmm I have little disagreement to this statement as in this case PSB has to work with NAD only...POLK can only be paired with Denon and list goes on....
In case if PSB are stated as neutral speakers then they should pair up and perform with all AVRs. I had heard about sound signatures and amplifiers sound coloring and till my knowledge it is personal perception of sound hearing.
Hope I haven't offend anyone here
audio is subjective........there are no rules. A sound signature can only act as a guide to your ears which does not imply that a certain speaker can only be paired with a certain AVR or Amp. Depending on what sound you prefer we can go ahead with proper selection of the hardware.