From producing in the studio to recording live performances, the RME Audio Fireface UCX II is a highly integrated pro audio solution in an ultra-compact format. The Fireface UCX II continues RME's long tradition of designing compact advanced interfaces, packing into a half-rack size unit.
The RME Fireface UCX II is a versatile, high-end audio interface geared toward professional audio applications requiring excellent audio quality, DSP mixing capabilities, and solid driver performance. When paired with the Earthworks Audio Measurement Mics, like the M23 Measurement Mic, you've got the ultimate setup for unparalleled audio results.
Compatible Accessories: We recommend pairing the RME Fireface UCXII with the Earthworks Measurement Mics, like the M23 Measurement Mic or M30 Measurement Mic for room measurements and sound system setup. To connect the two components, we recommend using the Mogami Microphone Cable, which is available as an add-on.
Connectivity and Features
- Class compliant mode
- 20/20 I/O
- TotalMix FX
- RME USB 2.0
- SteadyClock FS
- DURec
The most powerful & portable RME Audio USB Interface
Whether working in your home recording studio or bouncing around different gig venues, the Fireface UCX II is an incredibly portable interface. At only 2 lbs and no wider than 8.5", the modular design of the Fireface UCX II makes it easy to travel with, taking up minimal space within your audio system setup. The Fireface UCX II houses two microphone preamp/line preamps in XLR combo configuration on the front panel, along with two digitally controlled line/instrument inputs, followed by a headphone jack, various control buttons, a display, and the main volume knob. At the rear are a set of ten analog balanced line inputs and outputs— MIDI I/O, ADAT I/O, AES/EBU—and SPDIF I/O, USB 2.0 as well as a switchable word clock I/O.
This unique audio system is capable of transferring analog and digital audio data directly to Windows and Mac computers. The latest plug-and-play technology, RME USB allows you to transport audio with the lowest latency and industry-leading stability. Numerous unique features like a well-thought-out Settings dialog and an integrated routing solution realize a quick, comfortable, and efficient operation of the Fireface UCX II.
Full Stand-alone Functionality
Control all device states directly from the front panel of the Fireface UCX II for convenient, direct access to all features. Use the four keys, high-resolution clear color display, and well-thought-out menu structure to quickly change and configure the device's settings. Additionally, internal memory allows for the permanent storage of six different states of the unit, allowing the Fireface UCX II to operate fully stand-alone. In stand-alone operation it can transform into totally different devices by the simple click of a button.
The Fireface UCX II operates in two different modes: driver-based USB2 and Class Compliant. The Class Compliant Mode is a standard that's used natively, supported by operating systems like Windows, Mac OSX, and Linux Distributions. No proprietary drivers are required to use this mode as the device will be directly recognized when the CC firmware is loaded. Note: The natively available features will be limited in comparison to those provided by the RME driver for the Fireface UCX II.
Powerful Technology for Mixing, Monitoring and Measurement included
The RME Fireface UCX II comes with the TotalMix FX DSP mixer offering comprehensive routing and monitoring options. TotalMix FX can completely replace an external mixer, enabling the creation of multiple latency-free monitor mixes with EQ, Dynamics, Reverb, and Delay for any outputs, including main monitors and headphone mixes for musicians. The additional TotalMix Remote is a remote control for TotalMix FX, controlling the hardware mixer and effects in RME audio interfaces. The TotalMix Remote mirrors the current state of the host system on the iPad and Windows/Mac computers— the entire mixing state, the complete routing, all FX settings, up to the level meters, and everything in real time. Easily adjust all the mixer and FX settings from a distance, via Ethernet and WiFi.
The Fireface UCX II is also equipped with DigiCheck, RME's secret weapon of high-resolution audio measurements. The DigiCheck Analyzer allows you to measure and analyze the digital data feed in both directions with maximum precision. SteadyClock FS is RME's reference-class digital clocking technology that suppresses jitter guaranteeing perfect sound quality throughout your entire mixing process.
DURec is an integrated digital recorder that allows you to record on USB thumb drives and hard drives with up to 2TB capacity via the rear USB port. The recording functionality is provided by the internal DSP, and is therefore independent from a connected Windows or Mac computer. This USB port can alternatively be used for direct connection of RME’s optional ARC USB remote control.
DC-Coupled Outputs - CV/Gate Voltage Control
The RME Fireface UCX II stands out from other audio interfaces due to its unique DC-coupled outputs. While most interfaces traditionally use AC-coupled outputs with capacitors to filter out extremely low frequencies, the Fireface UCX II takes a different approach.
While the low frequencies associated with AC-coupled outputs are often undesirable for audio—eating into headroom and potentially causing damage to other equipment—one instance where DC-coupling remains desirable is the world of modular synthesizers, where static or slow-moving signals are used for control over various parameters such as pitch note values or LFOs.
All of the Fireface UCX II line-level outputs are fully DC-coupled, allowing control voltages (CV) or Gate information to be sent to modular synthesizers (such as the popular Eurorack and Moog/MOTM/Synthesizers formats) and other studio hardware. By offering DC-coupled outputs, the RME Fireface UCX II enables a more versatile and integrated approach to working with modular synthesizers and studio equipment, making it an ideal choice for electronic musicians and producers who require this level of connectivity and control.
RME Audio: Innovative & Reliable
German company RME Audio is renowned for its high-quality, professional-grade audio interfaces, digital-to-analog DA Converters (DACs), and headphone amplifiers. They're known for their exceptional sound quality, reliable drivers, and innovative technology such as SteadyClock, Digiface USB, and Madiface USB. Some of their standout products include the RME ADI-2 DAC, ADI-2 Pro, RME Babyface Pro FS, and RME Fireface UFX II, all of which have garnered praise from audiophiles and industry professionals alike for their outstanding performance and versatility.
What's In the Box?
- Fireface UCX II
- Cable USB 2.0, 1.8m (6 ft)
- Optical Cable (TOSLINK), 2m (6.6 ft)
- B0968 Digital Breakout Cable (XLR/RCA)
- External switched power supply, lockable connector, DC 12 V 24 W
- Power Cord
FAQ
Does the Fireface UCX II have built-in DSP effects?
Yes, the RME Fireface UCX II features the TotalMix FX DSP mixer, which includes effects such as EQ, dynamics, reverb, and delay.
Is the Fireface UCX II compatible with both Windows and macOS?
Yes, the RME Fireface UCX II is compatible with both Windows and macOS systems and is known for its stable drivers on both platforms.
General
- Included Power Supply
- External switching PSU, 100 - 240 V AC, 2 A, 24 Watts
- Standby Power Consumption
- 50 mW
- Idle Power Consumption
- 10 Watts, Max. power consumption: 22 Watts
- Idle Current at 12 V
- 850 mA (10 Watts)
- Dimensions (WxHxD)
- 215 x 44 x 130 mm (8.5" x 1.73" x 5.1")
- Weight
- 1.0 kg (2.2 lbs)
- Temperature Range
- +5° up to +50° Celsius (41° F up to 122°F)
- Relative Humidity
- < 75%, non-condensing
- Clocks
- Internal, AES In, SPDIF In, ADAT In
- Jitter Suppression of External Clocks
- > 50 dB (2.4 kHz)
- Effective Clock Jitter Influence on AD and DA Conversion
- Near zero
- PLL (Phase-Locked Loop) Features
- Ensures zero dropout, even at more than 100 ns jitter
Additional Digital Bitclock PLL for trouble-free varispeed ADAT operation - Supported Sample Rates for External Clocks
- 32 kHz up to 200
- Internally Supported Sample Rates
- 44.1 kHz up to 768 kHz
- AES/EBU
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1 x XLR, transformer-balanced, galvanically isolated, according to AES3-1992
Output level: 2.7 Vpp
Format: Professional according to AES3-1992 Amendment 4
Single Wire mode, sample rate: 28 kHz up to 200 kHz - SPDIF coaxial
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1 x RCA, according to IEC 60958
Output level: 0.75 Vpp
Format: Consumer SPDIF according to IEC 60958
Single Wire mode, sample rate: 28 kHz up to 200 kHz - SPDIF optical
-
1 x optical, according to IEC 60958
Format: Consumer (SPDIF) according to IEC 60958
Sample rate: 28 kHz up to 200 kHz - XLR
-
Input: XLR, servo-balanced
Input impedance balanced: 18 kOhm, unbalanced: 9 kOhm
Input sensitivity switchable: +24 dBu, +19 dBu, +13 dBu, +4 dBu @ 0 dBFS
Digital Trim Gain range: 0 dB up to +6 dB
Signal to Noise ratio (SNR) @ +13/19/24 dBu: 120 dB RMS unweighted, 124 dBA
Signal to Noise ratio (SNR) @ +4 dBu: 119 dB RMS unweighted, 123 dBA
Frequency response @ 44.1 kHz, -0.1 dB: 5 Hz – 20.5 kHz
Frequency response @ 96 kHz, -0.5 dB: 3 Hz – 45.5 kHz
Frequency response @ 192 kHz, -1 dB: 2 Hz – 92.7 kHz
Frequency response @ 384 kHz, -1 dB: < 1 Hz – 124 kHz
Frequency response @ 768 kHz, -3 dB: < 1 Hz – 180 kHz
THD @ -1 dBFS: -116 dB, 0.00016%
THD @ -10 dBFS: -125 dB, 0.000056%
Channel separation: > 110 dB - TRS
-
As input XLR, but:
Input: 6.3 mm TRS jack, servo-balanced, fully compatible to TS and RCA - 1/2 XLR
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Output level switchable: +24 dBu, +19 dBu, +13 dBu, +4 dBu @ 0 dBFS
Signal to Noise ratio (SNR) @ +13/19/24 dBu: 120 dB RMS unweighted, 124 dBA
Signal to Noise ratio (SNR) @ +4 dBu: 117 dB RMS unweighted, 120 dBA
Frequency response @ 44.1 kHz, -0.1 dB: 0 Hz – 20.2 kHz
Frequency response @ 96 kHz, -0.5 dB: 0 Hz – 44.9 kHz
Frequency response @ 192 kHz, -1 dB: 0 Hz – 88 kHz
Frequency response @ 384 kHz, -1 dB: 0 Hz – 115 kHz
Frequency response @ 768 kHz, -3 dB: 0 Hz – 109 kHz
THD @ 0 dBFS: < -120 dB, 0.0001%
THD+N @ 0 dBFS: -115 dB, 0.00018%
Channel separation: > 110 dB
Output impedance: 200 Ohm - 1/2 TRS (rear)
-
As output XLR, but:
Output: 6.3 mm TRS jack, impedance balanced
Maximum output level: +19 dBu
Signal to Noise ratio (SNR) @ +19 dBu: 120 dB RMS unweighted, 123 dBA
Signal to Noise ratio (SNR) @ +13 dBu: 118 dB RMS unweighted, 121 dBA
Signal to Noise ratio (SNR) @ +4 dBu: 115 dB RMS unweighted, 118 dBA
Output impedance: 100 Ohm unbalanced, 200 Ohm balanced - Phones 1/2
-
As Output 1/2 TS, but:
Output: 6.3 mm TRS jack, unbalanced, stereo
Output impedance: 0.1 Ohm
Signal to Noise ratio (SNR) @ +22 dBu: 120 dB RMS unweighted, 123 dBA
Signal to Noise ratio (SNR) @ +7 dBu: 118 dB RMS unweighted, 121 dBA
Output level at 0 dBFS, Ref Level +19 dBu, load 100 Ohm or up: +22 dBu (10 V)
Output level at 0 dBFS, Ref Level +4 dBu, load 8 Ohm or up: +7 dBu (1.73 V)
THD @ +18 dBu, 32 Ohm load, 1.2 Watt: -110 dB, 0.0003 %
THD+N @ + 18 dBu, 32 Ohm load: -107 dB, 0.00045 %
THD @ +14 dBu, 16 Ohm load, 0.94 Watt: -110 dB, 0.0003 %
Max power @ 0.001% THD: 1.5 W per channel - General
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Lock Range: 28 kHz – 200 kHz
Jitter suppression: > 50 dB (2.4 kHz)
Accepts Consumer and Professional format - AES/EBU
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1 x XLR, transformer-balanced, galvanically isolated, according to AES3-1992
Input sensitivity: 1.0 Vpp - SPDIF coaxial
-
1 x RCA, transformer-balanced, according to IEC 60958
High-sensitivity input stage (< 0.3 Vpp)
AES/EBU compatible (AES3-1992) - SPDIF optical
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1 x optical, according to IEC 60958
ADAT compatible