Yesterday I had lunch with Mr. Mark Levison. Now he found his forth company after Mark Levison, Cello, and Red Rose Music. What piqued my interest is his A+ algorithm in Master Class software. It seems to be remastering tool using applied technology from Cello Audio Palette. You can read more about A+ technology and test with sample files from website below.

https://www.danielhertz.com/master-class-software

He claimed it will improve sound quality by filling the gap between digital block with the original data for more analog sound. It sounds like dithering to me but his engineer told me it’s not dithering. I wonder how A+ works and will it provide any benefit measurable with scientific data.

I also discussed with his engineer about Master Class software and its potential to bring A+ technology into other platforms and possibly DAC/Network Player. Companies like Weiss and Meridian also started to promote digital filter features in their products like DAC501 and MQA. I wonder if future of highend audio will revolve around digital filter from audio mastering solutions to consumer audio products.

Regards,

Keetakawee