I'm using ref1000 monos with Totem Mani-2's (a very picky speaker) and it's wonderful. There's no brightness or harshness at all. The s300 is just its little brother power-wise so I'd bet that you'd be just as happy with that as I am with mine.
I suspect that the Bel Canto amps are all pretty revealing, so brightness in the upstream components will come through pretty precisely through the speakers.
As with most components, make sure you're carefully matching different pieces based on their relative strengths and weaknesses.
I suspect that the Bel Canto amps are all pretty revealing, so brightness in the upstream components will come through pretty precisely through the speakers.
As with most components, make sure you're carefully matching different pieces based on their relative strengths and weaknesses.