The things you are looking for in a sound system, such as a wide soundstage, great 3 D imaging, airy voices, and great details with smooth yet realistic sounds, has more to do with the speakers, the set up between the speakers and your listening seat, and room acoustics. Amplifiers do have a sound of their own, but we all have our own ideas of what " realistic " is. The amp, ime, should be matched to the speakers, and I would think, at this point, get something inexpensive ( used ) to work with, and take time setting up the room as I stated. A Hafler or Adcom amp can be had for very little, are both good products, and will get you enough from an amplifier, to hear your system, and work with the tuning and tweaking, to your liking. You might find, you do not like your speakers, as you have already sent a pair back. Listen to what I am saying....and I am not saying anyone else is wrong, but as you are a newbie, I believe I am right. Happy Holidays to all, and, Enjoy ! MrD.