The A19 I heard sounded ok to me, and reasonably neutral, I think it would be fine to partner KEF's, I heard it with R700's and was quite happy with it. Infact I was on the verge of buying an A19 as I didn't hear anything else particularly better in the price range, but then I heard a comparison between the audiolab 8200 and a similarly priced valve amp. The audiolab (and every other electric amp I've heard with it - Creek, Cambridge, Musical Fidelity, Rega) was completely put to shame, smashed to pieces, hideously disfigured by the unassuming slightly odd looking little valve amp. Thats where my vote goes FWIW. Though it does depend somewhat on what music you listen to also.