“… this is truly demonstration quality sound!”

– HiFi+ (UK)

“[The Spirit of Turtle] consistently crafts the most revealing multi-channel recordings in the world today.”

– Neil Patel | Avalon Acoustics

“So natural, so direct, so strong… Ich war völlig von den Socken!”

– Christoph Prégardien

“Moving, startlingly beautiful… Lump in my throat…”

– Ewald Demeyere

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

– Marion von Tilzer

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

– Bob Zimmerman

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

– Gunar Letzbor

“… so much emotional impact that every hair on my arms and neck starts to arise…”

– Werner Ero | HiFi.nl

“… Bert van der Wolf’s peerless recording technique, almost wiping out (depending on the quality of the sound reproduction) the difference between the concert hall and a private listening room. Quite exceptional, really. “

– Adrian Quajner | HRAudio.net

“… His approach to surround mixing is uniquely brilliant and gives you the real impression that you were at the session…”

– Merging Technologies

“… If Kuijken & Co are playing Mozart piano quartets and Bert van der Wolf takes credit for the recording one might as well buy it blindfolded…”

– Adrian Quanjer and HRAudio.net

“…I’d say sound quality wise, these files are uniformly overall the finest sounding digital I have yet heard…”

– Mike Lavigne | What’s best forum