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RME Fireface UCX II USB/Firewire and iPad Audio Interface

The RME Fireface UCX II is a high-performance audio interface offering 40 channels of analog and digital connectivity in a compact form factor. Designed for professional recording applications, it features advanced SteadyClock FS technology and integrated digital recording capabilities via DuREC.

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History and Development

Released to celebrate 20 years of RME innovation, the Fireface UCX II serves as a flagship successor to the original UCX model. RME developed this iteration to incorporate modern technological advancements while maintaining the compact half-rack size that defined its predecessor. It integrates flagship-level features such as SteadyClock FS, which was originally developed for RME's high-end AD/DA converters, bringing a higher level of precision to the portable interface range.

Technical Features and Connectivity

The Fireface UCX II provides a total of 40 channels, split into 20 inputs and 20 outputs. The front panel features two high-grade mic/line combo inputs designed to capture audio with transparent detail.

A standout technical feature is the DuREC (Direct USB Recording) functionality. This allows users to record all inputs and outputs directly to a USB storage device, enabling the interface to operate as a standalone digital recorder without the need for a computer. Furthermore, the unit includes SteadyClock FS technology, which significantly reduces jitter and ensures stable synchronization across all digital formats.

Sound Character

The sound signature of the UCX II is defined by its transparency and precision. The high-grade preamps are engineered to capture the natural nuance of a performance without adding unwanted colouration. This neutral character makes it an ideal choice for professional engineers who require accurate monitoring and a faithful representation of the source material during the tracking process.

Target Audience

This interface is suited for professional studio engineers, mobile recording specialists, and live performers who require high channel counts in a compact unit. Its iPad compatibility also makes it a viable solution for high-end mobile production setups. While it offers professional-grade features, it remains accessible for serious home producers who demand higher clocking stability and more robust routing options than entry-level devices.

Comparison to Alternatives

When compared to entry-level interfaces like the Focusrite Scarlett 2i2 4th Gen, M-Audio M-Track Solo, or Behringer U-PHORIA UMC202HD, the UCX II occupies a significantly higher tier in terms of channel count, clocking accuracy, and standalone functionality. Unlike the Tascam US-2x2HR or Blackstar Polar 4, the UCX II includes advanced digital recording (DuREC) and professional-grade SteadyClock FS. Compared to the MOTU 10Pre, the RME focuses on a higher density of connectivity in a smaller half-rack footprint, often appealing to users where desk space or portability is a priority.

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Frequently asked questions

What is the total channel count of the RME Fireface UCX II?
The interface offers a total of 40 channels. This is comprised of 20 input channels and 20 output channels across analog and digital connections.
What is SteadyClock FS technology?
SteadyClock FS is RME’s proprietary clocking technology designed to reduce jitter to an absolute minimum. It ensures that the digital-to-analog conversion remains precise and stable, even when synced to external clock sources.
Can the Fireface UCX II record without a computer?
Yes, it features DuREC (Direct USB Recording). This allows you to record all inputs and outputs directly to a USB thumb drive or hard drive connected to the front-panel USB port.
Is the RME Fireface UCX II compatible with iPads?
Yes, it is designed to work with iPads, providing a high-end mobile recording solution. This makes it suitable for musicians who want professional audio quality in a portable tablet-based setup.
What type of preamps does the UCX II use?
It features two high-grade mic/line combo preamps on the front panel. These are designed for pristine sound capture, maintaining the detail and nuance of the original performance.
What makes the UCX II different from the original UCX?
The UCX II includes several upgrades, most notably the addition of the DuREC recording feature and the inclusion of SteadyClock FS technology. It also features updated connectivity and improved internal components for lower jitter.
Does this interface support Firewire connections?
The manufacturer description lists USB and Firewire connectivity options. This provides flexibility for users with older hardware or specific throughput requirements.
What is the physical size of the Fireface UCX II?
It is a compact, half-rack unit. This size is specifically designed to be portable while still offering the connectivity usually found in full-sized rack interfaces.
How many mic inputs are available on the unit?
The unit features two front-facing mic/line combo inputs. Additional inputs are available via the rear analog connections and digital expansions.
What is the price range for the RME Fireface UCX II?
The typical price for the interface is approximately £1,294. This reflects its status as a flagship, professional-grade audio solution.
Can I use this interface for live performances?
Yes, its standalone capabilities and DuREC feature make it excellent for live use. You can record the performance directly to USB while simultaneously using it as a mixer or interface for live sound.
How does it compare to the Focusrite Scarlett series?
The UCX II is a professional flagship interface with significantly more channels and advanced features like SteadyClock FS and DuREC. The Scarlett 2i2 is an entry-level interface designed for simple two-channel recording.