i use a b1 condenser.
i have only good words to say about it.
maybe it's only drawback is that gives a bright colour to sound. but very little, which can be corrected if gets anoying.
c1 i assume is a newer generation. so, it shoud be good enough.
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Yamaha S770, Studio One 3, EMU 0404USB, ESI, ATH, Dell. And others.