Reviewed by Rushton Paul

“Bert van der Wolf is one of the best recording engineers in the business today. His recordings have only gotten better and better over the years as he's been able to incorporate into his recording chain the latest developments in high end technology. I've written many times in these pages about various of his recordings that I treasure. His releases are always of the highest musical value (with excellent artists and interesting repertoire) along with the highest sonic standards. My feeling is "If Bert recorded it, I want to hear it." I've yet to be disappointed. Rushton Paul Posi+ive Feedback”

Reviewed by Willem Loonstra

“Binaural - a listener's testimonial I'm a Classical Music lover and listen with headphones often. Therefore Spirit of Turtles' newest Binaural format immediately got my attention. I bought the Mendelssohn Violin Concerto by Ferschtman, for which I have the album as Stereo DSD in my collection too. What a wonderful surprise to listen to this music with the special headphone rendering. It takes me a minute or two to get used to the audiable circumstances. Is it because my brain got tricked actually? It's like some extra space has been added between your ears and the headphones. This allows for so much room that the soloist and orchestra alltogether fit very well. Furthermore, there is like a third dimension added, as if you could look straight through the orchestra, identifying individual instruments with ease. The music really is in front of you, instead of centered in your head. Pay attention to the playback volume. It should not be too loud of course, but loud enough to support that feeling of being in the concert hall. The solo violinist is presented clearly and nicely balanced with the orchestra. You can hear the passion of her playing as if she stays right in front of you. Only in a few cases there is the risk she merges a bit into the background resulting in a thinner violin sound. I can imagine this happens if physically the soloist moves a bit back and forth during playing. The string section of the orchestra sounds warm and you can almost touch them. Sometimes I was inclined to look left or right to see the violins resp. celli. In the third movement the fast rythmic countermelody played by the flute (along with the soloist) is very clear and forms a nice combination. What caught my ears as well was the detail in a timpani roll, where the individual hits were remarkably well defined. All in all a really great experience that longs for more! Willem Loonstra Classical Music and Hifi Enthusiast Sennheiser HD600 with Chord Mojo”

Reviewed by Michael Schønwandt | Director

“Bert has an acute and open musicality which enables him to inspire the musical ideas... Michael Schønwandt | Director”

Reviewed by Bob Zimmerman

“"What an exquisitely transparent yet deep sound, and impeccably balanced!"”

Reviewed by Marion von Tilzer

“"I've never experienced such an open athmosphere in a studio situation before!"”

Reviewed by Gunar Letzbor

“"... it was the moment I knew: with this man I will work together with pleasure!"”