I've auditioned the CV391 amp back-to-back with the CC80 and VTL ST-150 on my Verity speakers about a year ago.
Long story short - I preferred the tonal character of the CV391 to the VTL, despite the fact that the VTL was clearly a better match on paper. The VTL "heaviness" is nice on some music, but the lighter & textured Shindo thing just sounds better with Verity.
Still though - when hearing the CC80 it was clear that the CV391 was lacking a bit of juice, as would be expected. So for long-term enjoyment, you need somewhat better matched speakers. Again though - the same night I listened to the CV391 with Devore O93's, and it wasn't nearly as good as the Verity's. So it's not all about the specs.
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