Krell KAV-250a/3 or KAV-500?

This will be for the fronts and center.

Is power the only factor for that? The Thiels are 4 ohm speakers, so the KAV-500 would be giving them 240 wpc. The recommended power for the speakers is 50-150 watts. It seems like even the KAV-500 would be plenty, and the 500 wpc at 4 ohms that the KAV-250a would provide would be excess.

Thanks Dave, I'll definitely check out balanced connections. I have an integrated amp now (an old Creek), so I don't have amp to preamp interconnects. I'll have to demo a few different things to see what I like the best.

Other than power, do you think there are any differences between the KAV-250a and KAV-500? I've listened to the 3250 and know I like that, but for financial reasons I'm going to be going with something a bit older. The 250a goes for a bit more than the 500, but if there's a marked difference in sound quality it would be worth it. If not, I'll go with the 500, and use the extra cash for media.

Thanks a bunch, Dave. That was very useful input. Just what I needed.