This is from back in 2010 but I don't think it's been posted before.
The secrets of the sound quality -
http://www.radionz.co.nz/audio/player/2532842
2010 interview with Sharon and Mark Vreeken
Re: 2010 interview with Sharon and Mark Vreeken
Thank you Murray for this link for this very interesting interview. I found it a little strange that for an interview about sound that when Mark started talking, it sounded like an echo chamber.
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