What do you hope to achieve with the mixer bit ?:
Right I get where you are coming from.
To clarify and also answer your main question, the reasons I wish to include a mixing desk are:
1. to route channels/tracks simultaneously from say Logic DAW to separate channels on a Mixer for additional processing and to get that 'hands on approach'
2. to enable recording of an external instrument/processor, say an analogue synth or compressor, should I want that option later on
I am not too keen on the idea of just routing everything back from the DAW into the mixer in stereo, as this is just going to limit the signal processing to just a pair of channels. The intention is to be able to route multi tracks/channels from the DAW into the desk, process them individually and simultaneously if wanted, and then back to the DAW for recording. So I understand that, some sort of D/A A/D conversion needs to be in place, either by a separate audio interface or a mixer which has a built in one. The Mytek DAC's main purpose is for true monitoring of whatever digital signals are passed through it ... So am I not right in believing that in the chain, the DAC needs to go between the main outputs of a mixing desk (via a digital signal from a Main Out of mixer to the DAC via digital In, which is then hooked up to the monitoring system) ... so this way, whatever signal I pass through any part of the chain, will be captured by the DAC via the Mixer/DAW for monitoring, mixing, recording, and final mix down.
Hope to get some light shed on this.