Nonreality;315093 Wrote: 
> Is it reducing the bits as per the replaygain tag to achieve it? 
> 
It's using the digital volume control, so yes the data is being scaled.
"Reducing the bits" is a rather crude way of putting it though :)

> 
> Does this mean that in a perfect world you wouldn't want to use replay
> gain if you are using the digital outputs? 
> 
Depends on your definition of "perfect world". If you want bitperfect
output then yes, you should disable RG and put the output volume to
100%. However, the audible effect of moderate digital level adjustment
is arguable and given the very well documented effect of volume on
perceived sound quality you may find things sound better properly
normalised, particularly if you play mixed tracks from different
albums/artists.

> in the same tread, I was told that the digital volume for the DIGITAL
> output (spdif) also works with 24bits just as at DAC's for the analog
> out ?
> 
Yes, the digital output is always 24-bit, and the volume control is
done in the 24-bit domain. The DAC is also 24-bit.

> but does the SB3 realy has the processing power to sample rate convert
> 16bit to 24bit ? surprise me again please :)
> 
Lossy formats like mp3 are decoded directly into 24-bit, lossless
16-bit formats (e.g. ripped FLACs) are padded with a 0 byte in the LSB.
It's not an expensive operation :)

> But I'm using fixed volume and no gain whatsoever, i've tried to run dts
> encoded stuff as flac and wav and it's works flawlessly. This indicates
> that the bits are "untouched" the bitstream is as encoded nothing
> altered changed or added, which in my book is very very good
The decoder is just ignoring the padding byte and looking at the "real"
16-bits of data.


-- 
radish
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