RME USB Premium Flagship Interface

The unique Fireface UFX II is the premier solution to transfer analog and digital audio data directly to a computer from practically any source.

Numerous unique features like SteadyClock FS, improved AD/DA Conversion, DC-coupled analog outputs, well thought-out configuration dialogs, an industry-leading mixing engine and monitoring solution, professional DSP effects and class-leading analog circuits with latest digital converters put the Fireface UFX II at the very top of the range of computer-based audio interfaces.

The first choice of Audio Professionals around the World

With exceptional flexibility and compatibility, the inclusion of DURec (Direct USB Recording), and RME’s famous low latency hardware and driver designs, the Fireface UFX II delivers a rich feature set that will appeal to users in both high end home studios and commercial audio production facilities.

With capacity for 60 audio channels (30 input and 30 output), support for sampling frequencies upward of 192 kHz, and the flexibility provided by USB connectivity, the new Fireface UFX II is an ideal solution to a wide range of recording, mixing, and monitoring applications.

The Fireface UFX II offers excellent flexibility that enables the interface to fit seamlessly into a myriad of production environments. Analog, ADAT, AES, SPDIF, and USB 2 are all standard on the Fireface UFX II. Equally impressive is the unit’s channel count: 12 analog, 16 ADAT, and 2 AES for 30 channels input and 30 channels output. Further, with support for USB 2 connectivity, the new Fireface UFX II can integrate with RME’s optional ARC USB remote controller.

RME’s Fireface UFX II incorporates premium AD/DA converters, optimized analog I/O circuits, as well as improved SNR and THD values to guarantee pristine, crystal clear and transparent audio. A new PAD-free mic circuit design with +18 dBu maximum input level and 75 dB gain range provides trouble-free operation for the most demanding recording environments.

Further, new low impedance, high power phones outputs (2 Ohms) with +19 dBu maximum output level provide ample output power and volume on any headphones - high or low impedance.

Tech Specs

Analog

AD, Line In 1-8, rear

Input: 6.3 mm TRS, electronically balanced
Signal to Noise ratio (SNR) @ LoGain: 116 dB (AES17), 118 dBA
Signal to Noise ratio (SNR) @ +4 dBu: 115 dB (AES17), 117 dBA
Frequency response @ 44.1 kHz, -0.1 dB: 8.9 Hz – 20.4 kHz
Frequency response @ 96 kHz, -0.5 dB: 4.3 Hz – 45.2 kHz
Frequency response @ 192 kHz, -1 dB: 3 Hz – 89 kHz
Filter: Short Delay Sharp, 5 / 5 / 6 samples delay
THD @ -1 dBFS: < -120 dB, < 0.0001 %
THD+N @ -1 dBFS: < -110 dB, < 0.00032 %
Channel separation: > 110 dB
Maximum input level: +19 dBu
Input: 6.3 mm TRS jack, electronically balanced
Input impedance @ 1 kHz: 10 kOhm unbalanced, 10.6 kOhm balanced
Input sensitivity switchable between Lo Gain and +4 dBu
Input level for 0 dBFS @ Lo Gain: +19 dBu
Input level for 0 dBFS @ +4 dBu: +13 dBu
Variable digital gain: 0 to +12 dB
Minimum level for 0 dBFS: +1 dBu, -1.2 dBV

Microphone In 9-12, front
As AD, but:

Input: XLR, electronically balanced
Input impedance @ 1 kHz: 3.4 kOhm
Signal to Noise ratio (SNR) @ 0 dB Gain: 117 dB (AES17), 119.5 dBA
THD+N @ -1 dBFS, Gain 20 dB: < -110 dB, < 0.00032 %
Frequency response @ 44.1 kHz, -0.1 dB: 10.7 Hz – 20.3 kHz
Frequency response @ 96 kHz, -0.5 dB: 5.1 Hz – 45.0 kHz
Frequency response @ 192 kHz, -1 dB: 3.5 Hz – 88 kHz
EIN @ 60 dB Gain, 150 Ohm, A-Weighted: -129.8 dBu
Gain range: 75 dB
Maximum input level, Gain 0 dB: +18 dBu
Maximum input level, Gain 75 dB: -57 dBu
CLIP LED: 0 dBFS
SIG LED: -60 dBFS

Instrument In 9-12, front
As AD, but:

Output: 6.3 mm TRS jack, servo-balanced
Signal to Noise ratio (SNR) @ HiGain: 116.5 dB (AES17), 118.5 dBA
Signal to Noise ratio (SNR) @ +4 dBu: 116 dB (AES17), 118 dBA
Signal to Noise ratio (SNR) @ -10 dBV: 107 dB (AES17), 109 dBA
Frequency response @ 44.1 kHz, -0.1 dB: 0 Hz – 20.2 kHz
Frequency response @ 96 kHz, -0.5 dB: 0 Hz – 44.6 kHz
Frequency response @ 192 kHz, -1 dB: 0 Hz – 77.5 kHz
THD+N: < -110 dB, < 0.00032 %
Channel separation: > 110 dB
Output level switchable Hi Gain, +4 dBu, -10 dBV
Output level at 0 dBFS @ Hi Gain: +19 dBu
Output level at 0 dBFS @ +4 dBu: +13 dBu
Output level at 0 dBFS @ -10 dBV: +2 dBV (+4.2 dBu)
Output impedance: 75 Ohm

DA, Line Out 3-8, rear

Resolution: 24 bit
Dynamic range (DR): 115 dB RMS unweighted, 118 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: < -110 dB, < 0.00032 %
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 unbalanced, 150 Ohm balanced
Output level switchable Hi Gain, +4 dBu, -10 dBV
Output level at 0 dBFS @ Hi Gain: +19 dBu
Output level at 0 dBFS @ +4 dBu: +13 dBu
Output level at 0 dBFS @ -10 dBV: +2 dBV

DA - Stereo Monitor Output XLR (1-2)
As DA, but:

Output: XLR, balanced
Output level switchable 24 dBu, Hi Gain, +4 dBu, -10 dBV
Output level at 0 dBFS @ 24 dBu: +24 dBu
Output level at 0 dBFS @ Hi Gain: +19 dBu
Output level at 0 dBFS @ +4 dBu: +13 dBu
Output level at 0 dBFS @ -10 dBV: +2 dBV
Output impedance: 150 Ohm

DA - Stereo Monitor Output Phones (9-12)
As DA, but:

Output: 2 x 6.3 mm TRS stereo jack, unbalanced
Maximum output level at 0 dBFS, High: +19 dBu
Maximum output level at 0 dBFS, Low: +2 dBV
Max power per channel @ 32 Ohm load, 0.02% THD: 200 mW (2.5 Vrms, +10 dBu)
Signal to Noise ratio (SNR) @ High: 116.5 dB (AES17), 118.5 dBA
Signal to Noise ratio (SNR) @ Low: 115 dB (AES17), 117 dBA
Output impedance: 2 Ohm

MIDI

2 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

Digital

Clocks: Internal, ADAT, AES, MADI, word clock
Low Jitter Design: < 1 ns in PLL mode, all inputs
Internal clock: 800 ps Jitter, Random Spread Spectrum
Jitter suppression: > 50 dB (> 1 Hz)
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

Digital Inputs

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 when synced to input signal: < 1 ns
Jitter suppression: > 50 dB (> 1 Hz)

ADAT Optical

2 x TOSLINK, format according to Alesis specification
Standard: 2 x 8 channels 24 bit, up to 48 kHz
Double Speed (S/MUX): 2 x 4 channels 24 bit 96 kHz
Quad Speed (S/MUX4): 2 x 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 (> 1 Hz)

SPDIF optical (ADAT2)

1 x optical, according to IEC 60958
Accepts Consumer and Professional format
Lock range: 27 kHz – 200 kHz
Jitter suppression: > 50 dB (> 1 Hz)

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 when synced to input signal: < 1 ns
Jitter suppression: > 50 dB (> 1 Hz)

Digital Outputs

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

ADAT

2 x TOSLINK
Standard: 2 x 8 channels 24 bit, up to 48 kHz
Double Speed (S/MUX): 2 x 4 channels 24 bit 96 kHz
Quad Speed (S/MUX4): 2 x 2 channels 24 bit 192 kHz

SPDIF optical (ADAT2)

Format Consumer (SPDIF) according to IEC 60958
Sample rate 28 kHz up to 200 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

General

Power supply: Internal switching PSU, 100 - 240 V AC, 36 Watts
Idle power consumption: 19 Watts
Typical power consumption: 22-25 Watts
Dimensions including rack ears (WxHxD): 483 x 44 x 210 mm (19" x 1.73" x 8.5")
Dimensions without rack ears (WxHxD): 440 x 44 x 210 mm (17.3" x 1.73" x 8.3")
Total depth: 240 mm (9.4”)
Weight: 3 kg ( 6.6 lbs)
Temperature range: +5° up to +50° Celsius (41° F up to 122°F)
Relative humidity: < 75%, non condensing

RME Fireface UFX II