Volt 476 vs Apollo x8 Gen 2
The Apollo x8 Gen 2 costs about $2,500 more than the Volt 476 and buys you 28 more I/O, plus TS 1/4" and 4-pin XLR male. Budget 25W more on the circuit.
Universal Audio
Volt 476Universal Audio
Apollo x8 Gen 2| Spec | Volt 476 | Apollo x8 Gen 2 |
|---|---|---|
| Rack space | 1U half-rack | 1U |
| Weight | 1.5 lbs | 8.7 lbs |
| Power draw | 5W | 30W |
| Depth | 175 mm | 343.1 mm |
| I/O count | 9 | 37 |
| Price | ~$399 | ~$2,899 |
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
Volt 476
- Combo XLR/TRS
- DC Barrel
Apollo x8 Gen 2
- TS 1/4"
- 4-pin XLR male
- TOSLINK (Optical)
- BNC
- RCA
- XLR Female
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 plannerTry 15 minutes without an account. Both units are in the catalog.

