RME Fireface UCX II – Compact 20×20 USB Interface with Stand-Alone & DURec

The Fireface UCX II packs studio-grade I/O, DSP routing, and stand-alone USB recording into a half-rack format. With 20 channels in/out, TotalMix FX with EQ and effects, and rock-steady clocking, it’s the perfect pro tool where space is limited.

Key Features

• 20 inputs / 20 outputs: Supports extensive routing for recording and playback sessions
• DURec (Direct USB Recording): Records to USB drives without a computer—ideal for live or mobile workflows
• TotalMix FX DSP engine: Full routing, parametric EQ, dynamics, echo and reverb on every channel
• SteadyClock FS clocking: Ensures low jitter and stable sync across digital formats
• High-performance mic preamps: Clean gain with low noise, phantom power, and precision metering
• Stand-alone operation: Six user presets allow full operation without a computer

Customer Benefits

UCX II gives you pro audio features typically found in larger rack units — in a compact, portable body. With stand-alone recording, integrated DSP, and flexible routing, it replaces multiple boxes in your workflow. Whether you’re tracking in small studios, doing mobile field work, or integrating into live setups, it provides full functionality with simplicity.

Quick Specs

• Channels: 20 in / 20 out
• Maximum sample rate: 192 kHz, 24-bit
• Analog I/O: 4 mic/line (combos), 8 line outputs
• Digital I/O: ADAT, AES/EBU, S/PDIF optical/coaxial
• MIDI I/O: 1 in / 1 out (DIN)
• Headphone output: 1 powerful front-panel jack
• Dimensions: 21.5 cm × 2.2 cm × 13.0 cm
• Weight: ≈ 0.9 kg
• Power: External 12 V DC supply (included)

What’s in the Box

• RME Fireface UCX II interface
• USB 2.0 cable
• 12 V locking power supply
• Digital breakout cable (for AES / S/PDIF connections)

Use Cases / Ideal For

Perfect for smaller studios, mobile recording rigs, rehearsal rooms, and hybrid setups. Well suited when you need standalone recording, full DSP routing, and pro-level conversion in minimal space.

Compatibility

Compatible with macOS, Windows, Linux. Class-compliant USB mode enables iPadOS use. Full control through TotalMix FX (desktop & iPad). Works seamlessly with DAWs, MIDI gear, and external digital audio ecosystems.

Pros & Cons

✅ Pros:

• High channel count with full DSP in a compact format
• Standalone USB recording via DURec
• Clean mic preamps and robust clocking with SteadyClock FS
• All DSP routing and effects built in—less external gear needed

⚠️ Cons:

• Rear access to some I/O may be tight in very compact racks
• Standalone mode may not support the full 20×20 count simultaneously

The RME Fireface UCX II is proof that power and flexibility don’t require full rack width—offering pro I/O, DSP, standalone recording and top-tier audio in one compact unit. Ideal for creatives who demand performance in tight spaces.