“ What another great show by ULTIMATE DIAMOND at the Smyrna Opera House Friday night! Sol does an amazing job of capturing the essence of Neil Diamond and his unique vocal style. Ultimate Diamond's energy is engaging with the audience, and takes them on a wonderful musical journey of hit songs. What a professional group of people to have the pleasure to work with. We would love to present them again in the near future!” - Brian Hill--managing director Smyrna Opera House (Smyrna,DE)

“"Sol Knopf is one of the most talented local performers we have had the pleasure of hosting at the Milton Theatre in the past few years. His Neil Diamond Tribute is full of spot-on recreations and high-quality musicianship to create a highly entertaining show fit for all ages and crowds. Sol's Neil Diamond Tribute is a true reflection of everything Neil represents. The energy and personality of the show will evoke memories of a lifetime."” - Fred Munzert