If you really want, you could use the optical out to an out-board DAC. In theory, there are plenty of expensive DACs that will give a better result than the built-in DAC.
In reality, I doubt most people will be able to tell a difference in a DBT.
Also, I wouldn't bother if you're listening to 128 bit-rate MP3/AAC files.
In reality, I doubt most people will be able to tell a difference in a DBT.
Also, I wouldn't bother if you're listening to 128 bit-rate MP3/AAC files.