Korg MR-1 recorder

[Tom Honeyman]

anyone got any opinions on this recorder?

http://www.korg.com/gear/info.asp?a_prod_no=MR1&category_id=3

It records in a different format to PCM. The marketing wonks have  
named it "1-bit audio".

Basically, it records a single bit to indicate a rise or fall, rather  
than say a 16bit or 24bit sample, at a rate of 2.8MHz (note M, not  
H). This can later be converted to 24bit/192kHz PCM. Not being an  
audiophile, I'm not familiar with this way of doing digital  
recordings. Apparently its been around since the 80s but is only now  
becoming affordable to non studios. It is the format of super audio  
cds (SACDs).

Are there any audio engineers on the list with an opinion about the  
viability of using this format for archiving/recording?

Here is the wikipedia page on one of the 1-bit audio formats:

http://en.wikipedia.org/wiki/Direct_Stream_Digital

Cheers,

Tom