I have my X4000 preamp with an Outlaw 7125 and it "sounds" better than the Onkyo 818 before it. I find when listening at high volumes, fast and furious 6 for a recent example, the heavy action scenes with music, etcc. sound more clean to me.
There are always the usual suspects around here that love to tell you that you dont need an amp with "dont be silly" type replies, but there are also plenty of articles to state differently.
I tried it (unlike a lot of folks here who just look at numbers) and I feel it was worth it. Keep in mind, I could ahve sent the amp back so I have no need to embellish because of buyers remorse. My advice, as to someone who actually tried it, is get one with a good return window and see what you think
. Do not listen to people on here about this subject, because you will find that most of the amp supporters never speak up, its just the "you dont need one" folks. I know this from experience and talking to respected posters via PM.
Im sure this will piss some folks off, but I dont really care. The whole notion of dismissing a purchase that you dont have any experience with, because of something you read, is not in the spirit of this forum. This isn't pointed at any particular poster here, Im just speaking from the experiences I went thru with amp research the last 3 months.
This is on this site in a similar thread:
"Here is a quote from Jim Salk (speaker designer and manufacturer)
"About five years ago, a friend named Peter Smith conducted a very interesting test at Rocky Mountain Audiofest. He set up a system with both an average-reading meter (standard RMS VU meter like you would find on most audio equipment) and a peak-reading meter. He played the system with the VU meter registering an amplifier output of 5 - 8 watts. To everyone's surprise, the peak meter read as high as 250 watts during transient peaks in the music being reproduced. The bottom line is that if you were using a 100-watt amp to play back music at an average of 5 - 8 watts, it would be clipping during these transients. In may not be all that noticeable since many of these transients would be things like drum hits that are essentially noise anyway. None-the-less, clipping would be taking place."
Peak wattage is a huge difference from average wattage. For an HT system, you should design it based on the peak SPL that you want at the listening position. As I said it takes a lot of power to reproduce the peaks."
This will be my last post though, PM me if you want to know any more. I've spent more time than needed defending a purchase that I know made an improvement in SQ.