I don't think I've ever seen a review for any Sherwood Newcastle product. I don't think anyone actually does them. I bought mine based on the salesman (cringe) and a better price compared to similar Rx at the store.

I can tell you I really like my R771 and have never heard any clipping/distortion.

M80s/VP160/QS8s/EP350; M22s; M3s.