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48-Month Financing*

RME

RME Fireface UCX II USB Audio Interface

Name: RME Fireface UCX II USB Audio Interface
Brand: RME
SKU: L88557000000000
Price: 1699.00 USD
Availability: InStock
Rating: 5 (1 reviews)

(1) Q&A SKU #L88557000000000

$1,69900

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Overview

Pro-level and ultracompact for studio and live recordings.

Compact Design With Studio-Grade Power

The RME Fireface UCX II delivers a professional audio interface in a half-rack format—perfect for compact studio and mobile rigs. It offers 40 channels of analog and digital I/O over USB 2.0, including mic/line inputs, ADAT, AES/EBU, SPDIF, MIDI and word clock. All analog outputs are DC-coupled, enabling control voltage output for modular synths and creative routing. With plug-and-play installation for Windows and Mac, this interface is ready to handle your workflow right out of the box.

Mic Pres, SteadyClock FS and Stand-Alone Flexibility

The UCX II includes two high-performance mic/line combo preamps and two instrument-ready line inputs on the front panel. RME’s SteadyClock FS technology reduces jitter to deliver transparent AD/DA conversion across all formats. The unit also offers full stand-alone functionality, allowing you to configure settings, save up to six presets and operate entirely without a computer—ideal for mobile setups or field recording.

Direct USB Recording and Live Playback

DURec lets you record and play back directly from USB storage devices, transforming the UCX II into a standalone multitrack recorder or virtual soundcheck tool. Capture full shows, rehearsals or sessions on the fly, then route any combination of channels for playback—even with no computer attached. The rear USB port also supports connection to RME’s ARC USB remote controller for hands-on operation.

TotalMix FX and Remote Software Control

With RME’s TotalMix FX DSP mixer, you get unlimited submixes, advanced routing, and onboard EQ, dynamics, reverb and delay—latency-free on every output. TotalMix Remote extends control across Mac, PC or iPad, letting you adjust your entire mix wirelessly via Wi-Fi or Ethernet. DIGICheck analysis tools are also included for precision metering and signal diagnostics.

Class Compliant Mode for Universal Compatibility

The Fireface UCX II supports both USB 2.0 and Class Compliant operation. In CC mode, it works plug-and-play with macOS, Windows and Linux—no driver installation needed. It’s perfect for fast integration with tablets or modern OS platforms while still offering high-performance routing and mixing through TotalMix FX when using the full RME driver suite.

Included Software Bundle for Production and Performance

The Fireface UCX II includes a powerful software bundle to get you creating right away:
• Ozone 10 Elements – Full license, all-in-one mastering tool
• True Sound Drum Pack Sampler – Premium drum sound collection (ZIP file)
• S Gear Amp Simulation Software – Full license, amp simulation plugin for guitar
• Brainworx BX Opto Compressor – Full license, optical compressor plugin
• Brainworx BX Master Desk – Full license, mastering software plugin
• Gig Performer – Trial version, live performance plugin for set lists, backing tracks and more
• Modartt Pianoteq 6 – Trial version, virtual piano instrument
• GG Audio Blue 3 – Trial version, virtual organ plugin
• Tape It – Full license, record and share music from your iOS device
• Auto-Tune – 3-month trial, industry-standard pitch correction plugin

As with every RME interface, the Fireface UCX II is engineered in Germany for long-term reliability, ultra-low latency and consistent professional performance. It’s the go-to interface for pros who demand stability and flexibility in every session.

Order the Fireface UCX II USB audio interface today.

Specs

Fireface UCX II USB Audio Interface Specifications:

Analog

AD, Line In 5-8, rear
Resolution AD: 24 bit
Signal to Noise ratio (SNR): 112dB RMS unweighted, 115 dBA
Frequency response @ 44.1kHz, -0.1dB: 5Hz–20.8kHz
Frequency response @ 96kHz, -0.5dB: 3Hz–45.8kHz
Frequency response @ 192kHz, -1dB: 2Hz–92kHz
THD: < -110dB, < 0.00032
THD+N: < -104dB, < 0.00063 %
Channel separation: > 110dB
Input: 6.3 mm TRS jack, electronically balanced
Input impedance: 8 kOhm unbalanced, 12 kOhm balanced
Input sensitivity switchable to +19dBu and +13dBu
Variable gain: 0 to +12dB
Minimum level for 0 dBFS: +1 dBu, -1.2 dBV

Line In 3-4, front

As AD, but:
Additional Gain stage: 0 up to +12dB
Maximum input level, +19 dBu, Gain 0dB: Line +19 dBu, Inst +13 dBu
Maximum input level, +13 dBu, Gain 12dB: Line +1 dBu, Inst -5 dBu
Input impedance: Instrument 1 mOhm. Line 13 kOhm balanced, 9 kOhm unbalanced
Input Gain Inst: +6dB
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: 75dB
Maximum input level, Gain 0dB: +18 dBu
Maximum input level, Gain 75dB: -57 dBu
EIN: -128 dBu A-weighted, 60dB gain,150 Ohm, 20Hz–20kHz

Line In 1-2

As AD, but:
Input: TRS, electronically balanced
Input impedance: 10 kOhm balanced, 5 kOhm unbalanced
Maximum input level, Gain 0dB: +24 dBu
Maximum input level, Gain 75dB: -51 dBu

DA, Line Out 1-6, rear

Resolution: 24-bit
Dynamic range (DR): 112dB RMS unweighted, 115 dBA
Frequency response @ 44.1kHz, -0.5dB: 5Hz–20.8kHz
Frequency response @ 96kHz, -0.5dB: 5Hz–45kHz
Frequency response @ 192kHz, -1dB: 5Hz–89kHz
THD: < -108dB, < 0.0004 %
THD+N: < -104dB, < 0.00063 %
Channel separation: > 110dB
Maximum output level: +19dBu
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)

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

Clocks: Internal, ADAT, AES, SPDIF, word clock
Jitter suppression of external clocks: > 50dB (2.4kHz)
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: 28kHz up to 200kHz

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: 27kHz–200kHz
Jitter suppression: > 50dB (2.4kHz)

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: 27kHz–200kHz
Jitter suppression: > 50dB (2.4kHz)

ADAT Optical

1 x TOSLINK, format according to Alesis specification
Standard: 8 channels 24-bit, up to 48kHz
Double Speed (S/MUX): 4 channels 24-bit 96kHz
Quad Speed (S/MUX4): 2 channels 24-bit 192kHz
Bitclock PLL ensures perfect synchronisation even in varispeed operation
Lock range: 31.5kHz–50kHz
Jitter suppression: > 50dB (2.4kHz)
SPDIF compatible (automatic detection)

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: 27kHz–200kHz
Jitter suppression: > 50dB (2.4kHz)

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 28kHz up to 200kHz

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 28kHz up to 200kHz

ADAT

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

Word Clock

BNC
Max. output voltage: 5 Vpp
Output voltage @ 75 ohm termination: 4.0 Vpp
Output impedance: 10 ohm
Frequency range: 27kHz–200kHz

General

Power supply: external power supply
Typical power consumption: 13W
Current at 12 Volt operating voltage: 910 mA (11W)
Dimensions incl. rack ears, full depth (WxHxD): 10.5" x 1.73" x 6.1", 265 x 44 x 155 mm
Dimensions without rack ears, body depth (WxHxD): 8.5" x 1.73" x 5.1", 215 x 44 x 130 mm
Weight: 910 g (2 lb)
Temperature range: +5° up to +50° Celsius (41°F up to 122°F)
Relative humidity: < 75%, non condensing

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