I see both Blu-Spec and SHM CDs for sale (at high mark-ups) in Japan. What  
exactly are they, and do they sound better than regular CDs?
 
Thanks,
 
Rich Kaplan
 
 
In a message dated 4/4/2015 12:54:25 A.M. Central Daylight Time,  
[log in to unmask] writes:

I think  Tom Fine was referring to Blu-Spec (now Blu-Spec2), which is a 
redbook  Japanese CD product, somewhat along the lines of SHM CD’s.  Not Blue 
Ray  or Blue Ray/Audio.

Bob Berkman


> On Apr 3,  2015, at 9:51 PM, Dave Burnham <[log in to unmask]> wrote:
>  
> As I recall, the fourth "D" in a 4D recording meant that the mixing  
console was all digital; not much of a virtue in the mid-90s as the best  analog 
consoles had very clean wide range sound. 
> 
> If you're  speaking about Blu-Ray audio disks, they are capable of high 
def sound with a  single disk able to contain many hours of material, (like 
the entire Wagner's  Ring on a single disc). 
> 
>  db