Scarlett 18i20 4th Gen vs Quantum HD 8
The Quantum HD 8 costs about $30 more than the Scarlett 18i20 4th Gen and buys you TS 1/4" and D-sub 9.
Focusrite
Scarlett 18i20 4th GenPreSonus
Quantum HD 8| Spec | Scarlett 18i20 4th Gen | Quantum HD 8 |
|---|---|---|
| Rack space | 1U | 1U |
| Weight | 7.3 lbs | 6.3 lbs |
| Power draw | Passive | Passive |
| Depth | 260 mm | 219 mm |
| I/O count | 33 | 33 |
| Price | ~$769.99 | ~$799.99 |
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
Scarlett 18i20 4th Gen
- RCA
- MIDI 5-pin DIN
Quantum HD 8
- TS 1/4"
- D-sub 9
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.