MBox 3 (not mini or Pro) Channels 3 and 4.
The Mbox 3 driver expanded the capabilities of the mbox line by decoupling the software output path from the actual hardware output.
The hardware analog inputs are 1 and 2. The hardware digital inputs are 3 and 4.
When you’re on the Analog 1/2 output tab, you have the inputs on the left and the software outputs on the right. The input side lets you directly route inputs to the output for low-latency monitoring. The software output side lets you mix and match software outputs 1-2 and 3-4 to the analog outputs as you see fit. The default software output for the analog output is 1-2.
The same goes for the S/PDIF L/R output tab except the default output path for the digital out is 3-4.
Check out the Flow view. This might help you understand.
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James Cadwallader
Mac Studio, 64GB RAM, 1 TB SSD, Glyph 2TB USB3 HDD, OWC drive dock, Mac OS Monterey 12.6.8
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