MX622BT vs MX821S
The MX622BT costs about $44.8 more than the MX821S and buys you TRS 1/8".
| Spec | MX622BT | MX821S |
|---|---|---|
| Rack space | 1U | 1U |
| Weight | 6.2 lbs | 6.4 lbs |
| Power draw | 15W | Passive |
| Depth | 152 mm | 152 mm |
| I/O count | 18 | 23 |
| Price | ~$254.79 | ~$209.99 |
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
MX622BT
- TRS 1/8"
MX821S
Nothing the MX622BT doesn't also have.
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.

