I've had my X-Meridian and upgraded 2227's OpAmps for a while now and thought I would share my findings. Now bear in mind I have a much more modest setup than many of you here so that is something to consider.
My speakers consist of Acoustic Research S50 mains, SC2 Center, S20 rears and a Velodyne 12" sub. Audio is deliver from the analogue outputs on the X-Meridian to the direct 5.1 channel inputs on my Sony STR-DB930 receiver. All cables are from bluejeans cables.
I really like the sound of my setup, but one thing that has been plaguing me since I first purchased everything years ago is that I find these speakers can be slightly harsh on certain material. Mainly guitar tracks. I love the sound, but it becomes fatiguing after long listening periods.
I like the sound of the X-Meridian out of the box and thought it was a solid upgrade from my previous Audigy2 ZS and felt it was worth the pricetag. After installing the 2227 OpAmps this card is now my favorite HT Purchase! The sound is much richer. It seems more detailed, yet relaxed. Its a nice warm, full sound that is very easy to listen to for long periods of time and I no longer experience that fatique I was getting with my past sound cards!
I am going to do the DC coupling mod this weekend, if it sounds even better with the mod I have to say I think this card is a hell of a deal! AVOpus has also peaked my interest in the LM4562's so I may have to order myself a set of those and give them a listen!
AVOpus - Do you mind me asking where you purchased your LM4562's? I found a couple sites that carry them but most seemed focused on bulk orders, do you have a supplier you would recommend?