Help with

If I recall correctly the Creek volume control is passive and just attenuates the signal from the DAC section to your amp. You should review all of the requirements of successfully using a passive amp to make sure you're set up properly. This has been discussed at length in this forum in recent months. Also, I think you may be missing the warmth thats usually a built in benefit of the Cal Dac's which may have compensated some for the tendency of some of your other components may have to sound a tad bright. While I agree for the most part with Rives, I part with him re room treatment recommendations as a solution at this point in time as you did not have these problems before(although this would be money well spent in the long run as it would/should apply to any most any system you get). I would rethink my DAC/Pre amp and amp/speaker requirements and spend my money in that area before buying cables or interconnects or making great changes in the room. One thing you can try that takes a minute and costs zip - try changing the toe in of your speakers slightly moving the axis of the speaker away being pointed at the ear. If they are already pointed straight ahead, try moving them to cross well in front of you. It can work with some speakers that have fairly flat horizontal dispersion characteristics in the midrange/tweeter. Toed in can also help with side wall reflections.

Thank you all!
Newbee, I think you are right on. My listening room is 27x18 and speakers are far from sidewalls. And the speakers are indeed toed in quite a bit.. I will experiment with pointing them straight ahead. Another issue that I didn't mention, ear level in the listening area is somewhat below the tweeters, the stands for the SuperOnes are a bit higher than recommended. Could that be a factor?

I don't think having your spks. positioned too high will result in brighter sound since the tweeter is above ear-level. How is your 4TC terminated? You might try connecting your amp/spk. bare wire. This might smooth out the sound and refine the top-end. Lastly, you might consider changing the 4TC to a heavier guage wire.(8VS?) Hope you get the results you're looking for! Bill

I would say that Rives partially right but hey what if there is no room and only headphones and still bright?

I enjoy my setup even when I'm not in the seet-spot and even when I'm aside of my speakers and It doesn't sound bright or dull from any listening position.

I agree with Newbee that you should check your passive pre/DAC/amp integrity and that's probably what mainly causing fatigue and excessive brightness.