In the general scheme of higher end audio, nope, it's cheap.
The important part is to be happy with the setup you have, if you start reading reviews and they mention things, you'll start hearing those too, and want better, then better, and before you know it, you've got a set of two $7000 hybrid solidstate/tube monoblock amps, or more.
I'm happy with mine... I try to avoid reading about other audio equipment for fear of wanting to upgrade. It's hard though when you need something like a CD player to not look at other stuff at the same time, haha.
In any case, I hope to not spend too much more, then just leave it for a few years at least, lol. The Kappa 8's combined with my 4004 MK2 and 24k provide a very warm feeling (IMO) but have a very tight sound, after moving to the Aragon stuff from my Harmon Kardon, the low end response change is phenomenal. I can only hope for as much of an improvement with a new CD player and interconnects.