I have a pair of Tannoy ST50 supertweeters on my Verity Parsifals and absoultely love them. Suprisingly, the imrovements are not so much in terms of added sparkle (although the treble does seem to extend higher up and seems more delicate and nuanced) but an overall sense of liquidity in the sound. The transients are also cleaner and quicker. A definite improvement, well worth the (steep) price.
