I disagree with Brtritch. One need not have a class A system in order to appreciate the addition of a top flight pc. Of course, placing a $1000 cable on a $500 component doesn't make much sense either. Having said that, I have heard expensive pc's make profound improvements in modest systems.
My recommendation would be to go to a service oriented dealer and audition some pc's. Try the cables on a couple different components. Then decide if the pricier cables seem to be worth it. Keep in mind that pc are very component dependent. Next, borrow the pc's for an in-home audition. My personal experience suggests starting with the amplifier first but as long as you have the cables at home, try them on different components. Also, keep in mind that high capacitance pc's can cause problems in a system. I've had some that created power supply transformer hum and system noise that was audible from the listening position.
For what it's worth, the $340 Shunyata Sidewinder Gold pc on my monoblocks made the single biggest improvement in my $30,000 of any upgrade I've made in the last couple of years.
My recommendation would be to go to a service oriented dealer and audition some pc's. Try the cables on a couple different components. Then decide if the pricier cables seem to be worth it. Keep in mind that pc are very component dependent. Next, borrow the pc's for an in-home audition. My personal experience suggests starting with the amplifier first but as long as you have the cables at home, try them on different components. Also, keep in mind that high capacitance pc's can cause problems in a system. I've had some that created power supply transformer hum and system noise that was audible from the listening position.
For what it's worth, the $340 Shunyata Sidewinder Gold pc on my monoblocks made the single biggest improvement in my $30,000 of any upgrade I've made in the last couple of years.