Audio Interface

RME Fireface UCX II VS Universal Audio Apollo x4

Total Inputs
5 vs 6
Total Outputs
5 vs 8
Connection Types
6 vs 5
Total Connections
10 vs 14

Connection Comparison

Side-by-side breakdown of all inputs and outputs

RME Fireface UCX IIConnectionUniversal Audio Apollo x4
1 IN 2 OUT
Audio 6.35mm
2 IN 6 OUT
1 OUT
Optical
1 IN 1 OUT
1 IN
Power
1 IN
1 OUT
USB
1 OUT
2 IN
XLR
2 IN
1 IN 1 OUT
MIDI DIN

Compatibility

How these two audio interfaces can connect

Compatible Connections

These connection types allow signal routing between the two units.

Audio 6.35mm Optical

Unique to RME Fireface UCX II

MIDI DIN

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