Is it my amp or my speakers?


I've been dissatisfied with my system of late--wanting a little more brightness and color--and can't decide if it's the amp or the speakers, or both. Here's the set-up:
  • Krell KAV-300i integrated
  • Cyrus CD-T
  • Schiit Gungnir DAC
  • Tekton Lore speakers
The Krell was a hand-me-down (!); everything else was purchased new. The amp had some overpriced work done to it a few years back and I'm wondering if the workmanship is starting to show, or possibly its age (~25 years, I'm guessing). Or, are the amp and speakers mismatched?I can afford to invest about $3K in the system, but am unsure where best to put it.Any thoughts/advice would be much appreciated.
danto
A buddy bought a used Krell Integrated (I don't recall the model) but it sounded awful, really flat, slow, small, unlike the Krell amp Im familiar with
I owned a Krell KAV-300i for a while.  It had a grainy edge that made it hard to listen to.  I think A Vincent SV-237 would give you more of what you're looking and you have the option of rolling tubes in the preamp section.  Simaudio makes some really nice integrateds, but they are going to be more neutral (are you sure you want "bright"?), but lots of detail and definition.
I had the Tekton M-Lore, and I thought they sort of smoothed everything over.  So, in my opinion, you'd be best served by finding different speakers.  Also keep in mind that speakers will have a much more significant impact on the overall sound of your system than an amp change.  The Krell should drive most speakers without issue, so I'd suggest reading up on speaker reviews and trying to demo (if possible) a speaker or two that seems like it has the sound profile you're looking for.  Places like Crutchfield and Music Direct have trial periods that will allow you to hear the speakers at home with your system.    

Good luck and have fun!
Scott