Originally Posted by Krazywaffle
The vast majority of my digital audio collection is 16/44.1 CD rips in FLAC so will leave 518 set on 16P24.
You could set up a phantom source for the 24 bit files you have, so allocating another one of the 12 inputs to the physical input the computer is using

Originally Posted by Krazywaffle
Will do some research to see if 568.2 de-emphasizes incoming digital audio.
I'm pretty sure it doesn't, de-emphasis in the digital domain negates the benefits, the gains come in reducing the HF in the analogue stage of the DAC, which reduces any HF noise by the same amount.
I seem to recall that when I used a 518 with a 568, switching emphasis in would make the sound bright; this could seem like an improvement, but in reality it's the same as turning up the treble...

Originally Posted by Krazywaffle
Read on an older thread that +6dB seems to be preferred over +5 or +8dB as, for some reason, +6bB is the most conducive to processing. Will experiment with this today, but being that my source is a computer perhaps no additional Gain is needed?
It's because +6dB is equivalent to moving up the whole PCM data by a whole bit, so in theory the maths is very simple, but the 518 has 72-bit processing, so 1dB increases will be transparent.
I'm still guilty of setting the volume on my G68 in 3dB steps; volume of 66 is okay, 65 isn't, so my start up volume is set to 66, not the default 65. I'm probably not the only one who does this!

Originally Posted by Krazywaffle
Thinking I’ll not run my DTS source through 518 as there doesn’t seem to be any advantage to doing so (eg, will just go directly into 568.2mm via Toslink).
From above "If you have a Meridian 518 Digital Processor, this will de-jitter a DTS signal for optimum sound quality", so may be worth it, especially over optical.

All the best,

Steve