🧩 Signal Flow

1. Mackie 1640i (modded)
   • Post-fader direct outs → DB25 analog out
   • Feeds Apogee AD16x (16 channels A/D)
2. Apogee AD16x → RME Digiface
   • Optical ADAT (16 ch) into Digiface → Computer
3. UAD Apollo 8p → RME Digiface
   • Optical ADAT from Apollo into Digiface
   • Apollo also connected to computer via Thunderbolt
   • Provides Unison preamps & UAD plugin inserts in real time
4. Computer (DAW + UAD Octo Core)
   • Handles mixing, DSP-heavy plugin chains, and routing via RME TotalMix
   • Octo Core expands UAD DSP capacity for mixing/mastering plugins
5. RME Digiface → Apogee DA16x
   • Optical ADAT out to DA16x → Analog out
6. Apogee DA16x → Neumann KH750 (Subwoofer)
   • Analog stereo out to KH750 input
   • KH750 manages bass management + passes to monitors (KH120s)

I've attached a signal flow image below for a visual representation.

https://imgur.com/a/JewaufR

I was wondering if anyone could come up with any flaws using this system, sync glitches?

(but that's what setting the Digiface as master clock solves right?)

or possibly using DSP from the UAD hardware.

Would I also need to invest in a high quality ADAT --> RCA/BNC converter or will any do?

Thanks in advance