The xover point (380 Hz?) makes passive biamping difficult. However, if you're determined, consider a "pro" amp like a Carver ZR1600 for the bass, which has variable gain. Then again, you could just get a capable amp to start with.
If you're going with the W4S DAC, why not buy the amps also? Why spend more for Bryston? The ST500 on my N802's easily surpasses the Classe amps I had in the past. I suspect the Bryston would fare no better.
I thought about a pro amp for the bass, a QSC or MC2. The Powerpac 300 really isn't much power for the woofer, when you consider good powered subs typically have 1K Watt amps.
The 7B-SST2 would be plenty of power @ 600W, maybe I'll do that. Would that be as good as trying to bi-amp them?
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