How do I warm up my system?


I have a Sony 555ES, deHavilland tube preamp, Nuforce amps and SP technologies speakers. System very detailed but highs are bright and harsh.

Considering DAC and or equalizer.

Any recommendations would be greatly appreciated.
hburns
details about setup:

-cables
-isolation
-listening position
-room treatment

as a general rule.. consider a dac or a different source...
Drapes are best on a large picture window. Carpet is good, start by not having the audio rack in the middle of the speakers, have it between the first and second reflection points. Find these points after you try the 1/3rd or 1/5th room set up method. (Have speakers and listening chair 1/3 or 1/5th of the way in the room) You can even combine the measurements,speakers 1/3rd and chair 1/5 of the way in the room. Sit in your listening position and have a friend run a mirror along the wall at speaker height, have them stop and mark the wall when you see the same side speaker. The second reflection point is when you see the opposite speaker ie. mirror is on the left wall and you now see the right speaker.
Hang a small (2'x4') rug on the wall covering the mid point of these areas. You can get a cheap thick bath rug at Target or Kmart for a couple of bucks, also garage sales are good as well for oriental style ones. GIK sells a fantastic room absorber for $50 or so per, the 2" thick one is perfect for reflection points, but don't buy anything until you determine this is your problem. This will tell you if your room is bright or dull. These are by no means the end all, be all of room treatment but it is a good affordable way to start, if you hear no difference then investigate equipment changes, I usually change one item at a time, trying to avoid the old too many variables syndrome.
Sony CDP's are bright and dry.....garbage in, garbage out. I'd suggest a different cdp.
The Sony is okay, but need a decent 16 bit filterless dac for sure, I have heard them on several sony transports that are used in hi-end machines, Krell etc... Go for DAC-AH, audiomirror, I think someone called Scott nixon has something as well.. all relatively good pricing.. Now beyond that sure room acoustics are always a good investment, but its also very hit or miss for what you are trying to correct...

Nuforce Amps well so that I do not catch too much flak for this I will keep it brief, Dry & a little Raw in my opinion.. for the money I see the appeal, but you could possibly do better if you find the right amp to work with your speakers, nuforce may not be that amp for you, but might be for someone else's speakers if you know what I mean.