Apollo x16 Gen 2 vs Volt 476
The Apollo x16 Gen 2 costs about $3,400 more than the Volt 476 and buys you 2 more I/O, plus DB25 and AES3 XLR. Budget 25W more on the circuit.
Universal Audio
Apollo x16 Gen 2Universal Audio
Volt 476| Spec | Apollo x16 Gen 2 | Volt 476 |
|---|---|---|
| Rack space | 1U | 1U half-rack |
| Weight | 11.9 lbs | 1.5 lbs |
| Power draw | 30W | 5W |
| Depth | 305 mm | 175 mm |
| I/O count | 11 | 9 |
| Price | ~$3,799 | ~$399 |
Highlighted where one is plainly lighter, smaller, cheaper or draws less. I/O count is left unmarked on purpose — more connectors you don't need is weight, cost and a bigger case.
Connectors only one of them has
Apollo x16 Gen 2
- DB25
- AES3 XLR
- BNC
- Thunderbolt
- XLR 4-pin DC
Volt 476
- Combo XLR/TRS
- TRS 1/4"
- USB-C
- DC Barrel
Settle it in your own rack
Specs decide less than fit does. Drop either one into your rig and see the real answer — what space is left, what the circuit draws, and whether every cable it needs actually lands somewhere.
Open the rack plannerFree, no sign-up. Both units are in the catalog.

