Originally Posted by erwinfrombelgium
ATI 3007 is (was?) $3,995 and is 300 Watt @ 8 ohm x 7.Edit: found the current price: $4,500 (though you would buy it for $3,895)
Maybe the ATI 2007 is more than enough? That's now $3,440 MSRP (sells for $2,995). It does 200 Watts @ 8 ohms x 7.
I would recommend the AT2007 (which is what I'm currently running) over the AT3007 simply because the 2007 does not require a 20A circuit, whereas the 3007 does. It's a fantastic amp. Beautifully built. The terminals on the back are nicely insulated, too. Well-designed spade inlets on the bottom, and deep enough to fit sawtooth-style bananas unlike many amps.
NOT fun to move around, though. And the ATI-OEM'ed Outlaw variant thereof is markedly inferior on that front, because it lacks handles on the front faceplate. (I wish the AT2007 also had the backside handles its Lexicon relative has, though.)
The Sunfire is an interesting amp. Amazing that they can get NRTL safety certification at those power levels.
Another similar amp to the Sunfire (Class G) is Arcam's 7-channel unit. Don't remember the name but it's a quality piece.
As for the Wyred4Sound, they'll be smaller and more energy-efficient than the bruiser ATI. But look to the ones that use the B&O ASX2-series Icepower modules. They have a more consistent FR into different loads than the older Icepower modules I think some of their amps still use. If someone does a multichannel amp based on the Hypex modules (Channel Islands Audio, maybe?) that is also worth looking into. The Hypexes have basically the same performance as Class AB amps but are a lot more energy-efficient.