Need at least 900wpc in 4ohm

Remember the impedance, most us don't know what size room the OP has. There are other very fine speakers that work best with an abundance of available power too. Furthermore, there are a lot amplifiers available to choose from that can fulfill the demand. The final result is what matters.

Devilboy, I agree that my subject line is over simplified. A more accurate assessment would be at least 500wpc with ability to deliver more. The 900 watt in 4 ohm Magtech is what set the standard for preferred performance. To Unsound's point, the room is large and open with pitched, vaulted ceiling. Thanks

I would suggest what you need are...new speakers. High sensitivity speakers make low sensitivity speaks sound like they have a wet blanket over them.

High sensitivity speakers make low sensitivity speaks sound like they have a wet blanket over them.

Until you feed them with 900 Watts. :)

I love Triode's AND Jim_swantko's comments. I've tried both, having had several different SET amps in my systems the last maybe-10 years, driving hi-efficiency (more than 100dB) linearrays. As the rest of my system increased in resolution, so I wanted higher-rez speakers. I quickly determined that I had neither the skills not determination to build them myself, and bought a pair of Audio Physic Avanti IIIs which were fairly quickly succeeded by the best speakers systems I've EVER hear, Vandersteen 5As.

I tried biamping them with a few different combinations of small amps but finally bought a pair of McCormack DNA-750s. WOW did my system 'come to life'. Altho I do not listen at high levels, these HIGH-power amps brought a sense of ease...effortlessness...that my system never had. Tccaux, I suggest you read Peter Moncrieff's review of the DNA-500...
http://www.iar-80.com/page5.html
...to get some sense of the McCormack sounds and then understand that the '750 is a further refinement (by the manufacturer, conrad-johnson) of the 2 significant principles Steve McCormack used--Distributed Node Amplification (meaning placing significant powersupply capacitance immediately adjacent to the output transistor) and fully push-pull, differential amplification (meaning that half the amp is pushing while the other half is pulling), and then buy a pair. I'm confident you will NOT be disappointed.
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