The Advanced USB Interface

40-Channels. Lowest Latency. Integrated USB Recorder.

The highest feature to space ratio. Period.

PREMIUM PLUGIN SUITE INCLUDED

BUY FROM OUR PARTNER SWEETWATER

FINANCING AVAILABLE

INCLUDING THE FREE ARC USB
Purchase this item at Sweetwater, and receive the free ARC-USB, a $179.00 value! Your free gear will be included with your shipment. Effective now through 1/1/2022.

BUY FROM SYNTHAX.COM

* The high demand may cause a delay in receiving your ARC USB of 1-3 weeks.

A most impressive ensemble
of outstanding parts.

Channels

Analog. AES/EBU. SPDIF. ADAT. WordClock. MIDI.

The perfect I/O combination for your home or mobile studio, your band rehearsals or a professional Podcast.

2 x High Quality MicPreamp

Lowest Noise. 75 dB Gain.
Including Compression-free
Automatic Gain Overload Protection (AutoSet)

SteadyClock FS

Ultra precise professional audio clock
with FemtoSecond Accuracy & complete Jitter immunity.

Industry-leading drivers
for Windows and MacOS

The fastest and & most stable divers.
Designed for situations, when your job is on the line.
Full Apple M1 and Monterey support.

Latest 2021 Analog Converter Design

Highest Precision AD/DA with Lowest Latency Design.

HP Phones Out

Low noise / high power.
Low impedance (1 Ohms).
Works as 2 x Line output too.

2 x Instrument Input

1 MOhm (Hi-Z) inputs with low noise preamp.

MIDI I/O

RME still got one!
A timing-optimized hardware MIDI port for your exernal MIDI equipment.

Integrated Multitrack Recorder

Direct USB Recording

Record and Play all 40 UCX II Inputs & Outputs.
Perfect for recording your band rehearsal, backup a live concert or your Podcast.

USB-In-FPGA Technology

Connects to USB2/3 ports.
Record-breaking low latency. Industry leading stability.
Fully compatible + maximum performance even with legacy USB2 ports.

Class Compliant Mode

No proprietary drivers are required, the UCX II is directly recognized and connects to iOS and Linux devices. Especially works great with the iPad.

TotalMix FX

The most powerful zero-latency DSP Mixer
– built into an audio interface.
Routing and mixing of all input and software channels
to ALL outputs – plus a comprehensive Control Room section for unrivalled monitoring capabilities

Internal DSP Effects

Full functionality without connection to a host computer.
Full control via the display.

Stand-Alone Mode

Full functionality without connection to a host computer. This way the UCX II can work as a pre-configured AD/DA converter/router with effects.

ARC USB Support

Programmable Remote Control for professional Monitoring. Direct access to the most frequently used actions and commands of TotalMix FX.

DC-coupled Outputs

CV/Gate support: Generate DC for measurement technology and analog, electronic synthesizers.

High Resolution Display

Status, Peakmeters for all channels.
Full front panel control of all UCX II features.

Precise Audio Metering

Easy to read level meters for all I/Os, direct on the front. All calculations for meters, peak- and RMS are done directly in hardware.

PREMIUM PLUGIN SUITE

Scuffham Amps S-GEAR: State of the art Guitar Amps.
BRAINWORX MASTERING PLUGINS
3-months full Antares Auto Tune Unlimited
Trial versions: Gig Performer, Modartt Pianoteq 6 by, GG Audio Blue 3 Organ.

40 Channels. No less.

The perfect I/O combination for your home or mobile studio,
your band rehearsals or a professional Podcast.

Analog

Analog Line I/O

Mic Preamps (XLR)

Instrument Inputs

Headphone (Low Impedance)

Digital & MIDI

AES/EBU I/O

SPDIF I/O Coaxial

ADAT I/O Ch.

WordClock In or Out

MIDI I/O

Connects to any USB2/3 port (USB-C cable included).

UCX II vs. UFX+

Inputs & Outputs

2 MicPres 4

2 High Impedance Instrument (instead of Line) 4

8 Line (alternative to Mic/Instr.) 12

1 Headphone Output 2

1 AES/EBU I/O 1

1 SPDIF I/O 1

0 MADI I/O Channels (48 kHz) 64

8 ADAT I/O Channels (48 kHz) 16

1 WordClock I/O 1

Analog & MIDI Specifications

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 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 AD, 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)

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

Digital & General Specifications

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

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 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)
  • SPDIF compatible (automatic detection)

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)

WordClock

  • 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)

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 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

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
WordClock

  • 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: 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): 258 x 44 x 155 mm (10.16″ 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
Bottom line, the UCX II is an expandable powerhouse of a unit with a surprisingly small footprint. Yet, on the UCX II, it all makes sense and comes together in a great-sounding, easy-to-use, and highly versatile audio interface that includes standalone multitrack recording.

Paul Vnuk Jr. – Recording Magazine

Learn More about the Fireface UCX II

The Sound

USB Recording

TotalMix FX

Plugin Suite

Videos

See our Overview Video
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