Fireface UFX II

Professional Audio Interface

Transfers analog and digital audio directly to Windows and Mac computers with high-quality sound.

Extensive Input and Output Options

Offers 30 input and 30 output channels including analog, ADAT, and AES connections.

TotalMix FX Mixer

Enables complex routing and mixing with built-in effects like EQ, reverb, echo, compressor, and more.

Stand-Alone Functionality

Can be used without a computer for recording, playback, and mixing with onboard controls and memory presets.

Direct USB Recording (DURec)

Records and plays back audio directly to/from a USB storage device without a computer.

Multi-Channel MIDI Support

Includes two MIDI I/O ports for connecting external MIDI equipment.

SteadyClock FS Technology

Ensures jitter-free and stable clock synchronization for all digital signals.

Flexible Monitoring Options

Provides high-quality headphone outputs and configurable monitor controls with quick access features.

Class Compliant Mode

Works with iPads and other devices without needing a driver installation.

Advanced Remote Control Compatibility

Supports the optional ARC USB for hands-on control during live or studio sessions.

General Specifications

Device Type: USB 2.0 Audio Interface

Interface: USB 2.0 (compatible with USB 3.0)

Supported Operating Systems: Windows 7 or later, macOS 10.6 or later

Supported Sample Rates: 32 / 44.1 / 48 / 64 / 88.2 / 96 / 128 / 176.4 / 192 kHz

Bit Depth: 24-bit

Analog/Digital Conversion: AD/DA with SteadyClock FS jitter reduction

TotalMix FX: 1800-channel digital mixer with 46-bit resolution

DSP Effects: 3-Band EQ, Low Cut, Reverb, Echo, Compressor, Expander, Auto Level

Memory: 6 internal memory slots for standalone operation

Display: High-resolution color display

Control: 3 rotary encoders with push functionality, 4 function keys

Form Factor: 1U 19” rackmount

Power Supply: Internal SMPS (100–240V AC)

Stand-Alone Mode: Fully functional including recording/playback to USB storage

Inputs/Outputs

Total Channels: 30 Input / 30 Output

Analog Inputs: 12 (4 front Mic/Inst/XLR combo + 8 rear TRS line)

Analog Outputs: 12 (6 rear TRS + 2 rear XLR + 4 front TRS phones)

Phones Outputs: 2 (front, high power, low impedance, channels 9–12)

Digital Inputs:

ADAT: 2 x TOSLINK (up to 16 ch @ 48kHz, 8 ch @ 96kHz, 4 ch @ 192kHz)

AES/EBU: 1 x XLR (SPDIF-compatible)

Word Clock In: 1 x BNC (with switchable 75Ω termination)

Digital Outputs:

ADAT: 2 x TOSLINK

AES/EBU: 1 x XLR

Word Clock Out: 1 x BNC

MIDI I/O: 2 x MIDI In, 2 x MIDI Out (5-pin DIN)

USB Port for DURec: 1 x front USB 2.0 port for direct recording/playback

Remote Control: 1 x dedicated ARC USB port

Clock Modes: Internal, ADAT1, ADAT2, AES, Word Clock

Input Impedance (Line): Balanced, servo-balanced

Input Impedance (Mic/Inst): 1 MΩ (Hi-Z)

Mic Gain Range: +8 dB to +75 dB (XLR), +8 dB to +50 dB (TRS)

Analog Output Levels

XLR Outputs (1/2): +24 dBu max

TRS Line Outputs (3–8): +19 dBu max (Hi Gain), +13 dBu (@ +4 dBu), +2 dBV (@ –10 dBV)

Phones Outputs (9–12): +9.5 V (High), +1.7 V (Low)

Audio Performance

Dynamic Range: Up to 118 dBA (DA)

Latency: Buffer sizes from 32 to 8192 samples

ASIO / WDM / Core Audio Supported

ASIO Direct Monitoring: Supported

Class Compliant Mode: Supported (Windows/macOS)

Loopback: Supported per output

DC-Coupled Outputs: All 12 analog outputs (CV/Gate compatible)

AutoSet: Automatic gain protection on inputs 9–12

SyncCheck & AutoSync: Jitter detection and auto clock source switching

Digicheck: Hardware-based metering, bit statistics, spectral analysis

DURec: Multichannel USB recording and playback of WAV files

Power Supply: Internal switch-mode, regulated, hum-free, short-circuit-proof