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Overview

Connectivity

  • 20 Input / 20 Output channels
  • 8 x Analog I/O
  • 2 x Mic/ Line Preamps, digitally controlled
  • 2 x Line / Instrument inputs, digitally controlled
  • AES/EBU and SPDIF I/O
  • ADAT I/O
  • Word clock in or out (switchable)
  • MIDI I/O
  • USB 2.0 (USB 3 compatible)

The Fireface UCX II is a highly integrated pro audio solution in an ultra-compact format for studio and live recordings. It continues RME's long tradition of designing compact advanced interfaces, packing into a half-rack size unit what usually would be spread out over two or three 19 inch panels.

With up to 20 channels record and 20 channels playback, SteadyClock FS, high performance microphone inputs, Parametric EQ, Dynamics processing, Echo, Reverb, (DURec) Direct USB Recording, MIDI I/O, a powerful headphone output and full stand-alone operation the Fireface UCX II excels with the highest feature to space ratio ever.

RME launches the Fireface UCX II, the successor of the iconic Fireface UCX. Featuring 40 I/O channels as well as a great variety of applications, the Fireface UCX II marks a new standard in the field of professional audio interface solutions with compact half-rack size. Also celebrating the company's 25th anniversary, the UCX II represents 25 years of RME innovation in a cutting-edge interface for flexible use in studios and live performances.

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DURec Direct USB Recording

DURec is an integrated digital recorder for all inputs and outputs directly to USB memory devices via the rear USB port. It allows to record on USB thumb drives or hard drives with up to 2 TB capacity. The recording functionality is provided by the internal DSP, and is therefore independent from a connected Windows or Mac computer.

The Direct USB Recording converts the Fireface UCX II into a stand-alone field recorder and a powerful multichannel live player for previous recordings, e. g. for virtual sound checks. Live concerts, band rehearsals or spontaneous jam sessions can be directly recorded and played back from the medium - even completely stand-alone without computer or software. All input and output channels can be individually chosen for recording and playback.

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Femtoseconds for clocking

With the SteadyClock FS, the Fireface UCX II features the latest clock and jitter rejection technology from RME. Based on a femtosecond clock, SteadyClock FS reduces the intrinsic jitter when converting from and to analogue over all digital formats to a new all-time low. 

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TotalMix FX & DigiCheck

The Fireface UCX II comes with the TotalMix FX DSP mixer offering comprehensive routing and monitoring options, as well as the DIGICheck Analyzer allowing to measure and analyze the digital data feed in both directions with maximum precision. 

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Class Compliant Audio

The Fireface UCX II operates in two different modes: driver-based USB2 and Class Compliant. The Class Compliant mode is a standard that is natively supported by operating systems like Windows, Mac OSX and Linux distributions. No proprietary drivers are required, the device will be directly recognized when the CC firmware is loaded. The natively available features will be limited in comparison to those provided by the RME driver for the UCX II.

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Technical Specifications

Analogue

AD, Line In 5-8, rear

  • Resolution AD: 24 bit
  • Signal to Noise ratio (SNR): 112 dB RMS unweighted, 115 dBA
  • Frequency response @ 44.1 kHz, -0.1 dB: 5 Hz – 20.8 kHz
  • Frequency response @ 96 kHz, -0.5 dB: 3 Hz – 45.8 kHz
  • Frequency response @ 192 kHz, -1 dB: 2 Hz – 92 kHz
  • THD: < -110 dB, < 0.00032 %
  • THD+N: < -104 dB, < 0.00063 %
  • Channel separation: > 110 dB
  • Input: 6.3 mm TRS jack, electronically balanced
  • Input impedance: 8 kOhm unbalanced, 12 kOhm balanced
  • Input sensitivity switchable to +19 dBu and +13 dBu
  • Variable gain: 0 to +12 dB
  • Minimum level for 0 dBFS: +1 dBu, -1.2 dBV
 
Line In 3-4, front
as AD, but:
  • Additional digital Gain stage: 0 up to +12 dB
  • Maximum input level, +19 dBu, Gain 0 dB: Line +19 dBu, Inst +13 dBu
  • Maximum input level, +13 dBu, Gain 12 dB: Line +1 dBu, Inst -5 dBu
  • Input impedance: Instrument 1 MOhm. Line 13 kOhm balanced, 9 kOhm unbalanced
  • Input Gain Inst: +6 dB
  • Input mode: Line balanced (TRS), Inst unbalanced (TS)
 
Microphone In 1-2, front
As AD, but:
  • Input: XLR, electronically balanced
  • Input impedance: 5.4 kOhm
  • Gain range: 75 dB
  • Maximum input level, Gain 0 dB: +18 dBu
  • Maximum input level, Gain 75 dB: -57 dBu
  • EIN: -128 dBu A-weighted, 60 dB gain,150 Ohm, 20 Hz – 20 kHz 
 
Line In 1-2
As AD, but:
  • Input: TRS, electronically balanced
  • Input impedance: 10 kOhm balanced, 5 kOhm unbalanced
  • Maximum input level, Gain 0 dB: +24 dBu
  • Maximum input level, Gain 75 dB: -51 dBu
 
DA, Line Out 1-6, rear
  • Resolution: 24 bit
  • Dynamic range (DR): 112 dB RMS unweighted, 115 dBA
  • Frequency response @ 44.1 kHz, -0.5 dB: 5 Hz – 20.8 kHz
  • Frequency response @ 96 kHz, -0.5 dB: 5 Hz – 45 kHz
  • Frequency response @ 192 kHz, -1 dB: 5 Hz - 89 kHz
  • THD: < -108 dB, < 0.0004 %
  • THD+N: < -104 dB, < 0.00063 %
  • Channel separation: > 110 dB
  • Maximum output level: +19 dBu
  • Output: 6.3 mm TRS jack, servo-balanced
  • Output impedance: 75 Ohm
  • Output level switchable +19 dBu, +13 dBu, +4 dBu
 
DA - Stereo Monitor Output Phones (7-8)
As DA, but:
  • Output: 6.3 mm TRS stereo jack, unbalanced
  • Maximum output level at 0 dBFS, High: +19 dBu
  • Maximum output level at 0 dBFS, Low: +4 dBu
  • Output impedance: 1 Ohm
  • Max power per channel @ 32 Ohm load, 0.1% THD: 210 mW (2.6 Vrms, +10.5 dBu)
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MIDI

  • 1 x MIDI I/O via 5-pin DIN jacks
  • Galvanically isolated by optocoupled input
  • Hi-speed mode: Jitter and response time typically below 1 ms
  • Separate 128 byte FIFOs for input and output
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Digital

  • Clocks: Internal, ADAT, AES, SPDIF, word clock
  • Jitter suppression of external clocks: > 50 dB (2.4 kHz)
  • Effective clock jitter influence on AD and DA conversion: near zero
  • PLL ensures zero dropout, even at more than 100 ns jitter
  • Digital Bitclock PLL for trouble-free varispeed ADAT operation
  • Supported sample rates: 28 kHz up to 200 kHz
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Digital input

AES/EBU
  • 1 x XLR, transformer-balanced, galvanically isolated, according to AES3-1992
  • High-sensitivity input stage (< 0.3 Vpp)
  • SPDIF compatible (IEC 60958)
  • Accepts Consumer and Professional format
  • Lock range: 27 kHz – 200 kHz
  • Jitter suppression: > 50 dB (2.4 kHz)

SPDIF coaxial
  • 1 x RCA, according to IEC 60958
  • High-sensitivity input stage (< 0.3 Vpp)
  • Accepts Consumer and Professional format, copy protection will be ignored
  • Lock Range: 27 kHz – 200 kHz
  • Jitter suppression: > 50 dB (2.4 kHz)
 
ADAT Optical
  • 1 x TOSLINK, format according to Alesis specification
  • Standard: 8 channels 24 bit, up to 48 kHz
  • Double Speed (S/MUX): 4 channels 24 bit 96 kHz
  • Quad Speed (S/MUX4): 2 channels 24 bit 192 kHz
  • Bitclock PLL ensures perfect synchronisation even in varispeed operation
  • Lock range: 31.5 kHz – 50 kHz
  • Jitter suppression: > 50 dB (2.4 kHz)

Word Clock
  • BNC
  • Internal termination 75 Ohm switchable
  • Automatic Double/Quad Speed detection and internal conversion to Single Speed
  • SteadyClock guarantees super low jitter synchronization even in varispeed operation
  • Not affected by DC-offsets within the network
  • Signal Adaptation Circuit: signal refresh through auto-center and hysteresis
  • Overvoltage protection
  • Level range: 1.0 Vpp – 5.6 Vpp
  • Lock Range: 27 kHz – 200 kHz
  • Jitter suppression: > 50 dB (2.4 kHz)
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Digital Output

AES/EBU
  • XLR, transformer-balanced, galvanically isolated, according to AES3-1992
  • Output level Professional 4.5 Vpp, Consumer 2.6 Vpp
  • Format Professional according to AES3-1992 Amendment 4
  • Format Consumer (SPDIF) according to IEC 60958
  • Single Wire mode, sample rate 28 kHz up to 200 kHz
 
SPDIF coaxial
  • 1 x RCA, according to IEC 60958
  • Output level Professional 1.2 Vpp, Consumer 0.6 Vpp
  • Format Professional according to AES3-1992 Amendment 4
  • Format Consumer (SPDIF) according to IEC 60958
  • Single Wire mode, sample rate 28 kHz up to 200 kHz
 
ADAT
  • 1 x TOSLINK
  • Standard: 8 channels 24 bit, up to 48 kHz
  • Double Speed (S/MUX): 4 channels 24 bit 96 kHz
  • Quad Speed (S/MUX4): 2 channels 24 bit 192 kHz

Word Clock
  • BNC
  • Max. output voltage: 5 Vpp
  • Output voltage @ 75 Ohm termination: 4.0 Vpp
  • Output impedance: 10 Ohm
  • Frequency range: 27 kHz – 200 kHz
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General

  • Power supply: external power supply
  • Typical power consumption: 13 Watts
  • Current at 12 Volt operating voltage: 910 mA (11 Watts)
  • Dimensions incl. rack ears, full depth (WxHxD): 265 x 44 x 155 mm (10.5" x 1.73" x 6.1")
  • Dimensions without rack ears, body depth (WxHxD): 215 x 44 x 130 mm (8.5" x 1.73" x 5.1")
  • Weight: 910 g ( 2.0 lbs)
  • Temperature range: +5° up to +50° Celsius (41° F up to 122°F)
  • Relative humidity: < 75%, non condensing