Need at least 900wpc in 4ohm

Gshepard, I definitely want to hear the Snells with a couple of MC 501's or more power. Like to think the 7000 and 452 weren't enough power and 501's would be less "warm". Thanks.

Sunfire 600 should be on the top of your list. It pumps out 1200 watts into 4 ohms and sounds fabulous at all volumes. It's a shame they aren't made anymore, but they come up on ebay regularly.

Make this the third vote for the Sanders Magtech.

It is an extraordinary amplifier with a superior power supply courtesy of its linear voltage regulator.

If more power is needed (and it might be if you are running full range ESL or large planar speakers) then the Sanders Magtech in a mono-bloc format will deliver 2000 watts into 4 ohm. That rating is of course RMS for both channels driven at any audio frequency (20 Hz to 20 KHz) and with a THD level cited in the manual of just 0.01% at any power level below clipping.

I would rather hear the speakers with high quality 100 watts per channel class A monos.

Sounds like what you need is a new pair of speakers.