I disagree with most of the below comments. I first found the Wittner more appealing particularly in the higher registers as I find it somewhat muted and therefore warmer. But listening for longer I realise that the Frisz does have a richer harmonic content to the sound.
I like the wittner, it sounds brighter and more open.
I like Frirsz Tailpiece
All the best
I like Wittner, but Frirzs it's very nice too... in mu opinion, Wittner is more clear and resonant
I disagree with most of the below comments. I first found the Wittner more appealing particularly in the higher registers as I find it somewhat muted and therefore warmer. But listening for longer I realise that the Frisz does have a richer harmonic content to the sound.