RME M-32 AD Pro II – The reference 32-channel analog-to-digital converter for professional audio infrastructures
The RME M-32 AD Pro II is a high-end 32-channel analog-to-digital (AD) converter designed to meet the demanding requirements of professional recording studios, immersive audio installations, broadcast facilities, sound reinforcement systems and network-based audio infrastructures. As the successor to the first-generation M-32 Pro, this new Pro II version benefits from fully optimized electronics, an ultra-precise fully balanced analog architecture, next-generation AVB network connectivity and RME's exclusive technologies, ensuring outstanding stability and audio transparency. Developed to operate at the heart of mission-critical environments, it provides a professional conversion solution capable of integrating into the most ambitious installations.
The M-32 AD Pro II provides simultaneous conversion of 32 analog inputs into MADI and AVB digital formats at sampling rates up to 192 kHz. Its fully balanced architecture, combined with state-of-the-art 24-bit converters, delivers a dynamic range of up to 120 dB(A), extremely low distortion and highly accurate reproduction of analog signals. Each channel can be individually configured with multiple reference levels (+13, +19 or +24 dBu), ensuring optimal compatibility with studio equipment, broadcast consoles, external processors and professional audio systems complying with SMPTE recommendations.
Designed for modern audio infrastructures, the M-32 AD Pro II combines multiple professional protocols within a single 19-inch chassis. It features 32 analog inputs on D-Sub 25 connectors, coaxial MADI and optical MADI interfaces (via optional SFP module), a Gigabit Ethernet AVB interface with two redundant network ports, Word Clock I/O, a USB port dedicated to remote control and firmware updates, as well as a MIDI interface for installations still relying on this protocol. This extremely comprehensive connectivity makes it easy to integrate into production studios, complex audio networks and large-scale permanent installations.
Native support for the AVB (Audio Video Bridging) protocol, compliant with IEEE 802.1 and 1722.1 standards, allows the 32 audio channels to be transmitted through a single Ethernet cable while ensuring reserved bandwidth, highly accurate time synchronization and precisely controlled latency. Thanks to its two fully redundant network interfaces, based on MILAN™ recommendations, the M-32 AD Pro II can be easily integrated into particularly complex distributed architectures while providing the operational continuity required for critical applications.
The MADI protocol, for which RME is one of the leading historical contributors, also remains at the heart of the converter's architecture. The coaxial and optical MADI interfaces allow transmission of up to 128 audio channels with proven reliability in live sound, broadcast, touring and professional studio environments. The MADI Auto Input function, together with SyncCheck® and ICC® (Intelligent Clock Control) technologies, continuously monitors available clock sources to ensure automatic synchronization and maintain system stability even in the event of a reference clock failure.
The entire internal signal management is handled by a powerful single-channel routing matrix allowing each signal to be individually assigned between analog inputs, MADI interfaces and the AVB network. This architecture provides exceptional flexibility for creating custom configurations, signal distribution, redundant systems or complex production infrastructures. The M-32 AD Pro II can be controlled directly from the front panel using its 2-inch color display and multifunction encoder, or remotely via USB, HTTP, JSON API, IEEE 1722.1 ATDECC or MIDI SysEx commands, making integration into professional monitoring systems straightforward.
Particularly suited for permanent installations, the M-32 AD Pro II features tri-color backlit channel indicators providing instant visibility of activity and signal levels across all 32 channels. Customizable labels protected by a magnetic cover make connection identification easier in technical racks and complex control rooms. The unit also includes fifteen configuration presets, a dark mode, secure parameter locking and a user interface designed to provide both quick operation and extremely precise control.
Built for continuous operation over many years, the RME M-32 AD Pro II features two fully redundant internal power supplies, highly robust electronics and RME's renowned long-term firmware support, regularly adding new features through updates. Thanks to its reference-level audio performance, extensive MADI and AVB compatibility, scalable network architecture and exceptional reliability, the M-32 AD Pro II stands today as one of the most advanced solutions for professional analog-to-digital conversion in studios, broadcast systems, immersive installations and the most demanding IP audio infrastructures.
Features & Specifications:
- Audio Conversion:
- Professional 32-channel analog-to-digital converter
- Conversion up to 24-bit / 192 kHz
- Fully balanced analog architecture (servo-balanced)
- Dynamic range up to 120 dB(A)
- Extremely low distortion (THD < -111 dB)
- Optimized impulse response from 88.2 kHz and above
- Reference-grade conversion for studios, broadcast and professional audio installations
- Analog Inputs:
- 32 analog inputs via D-Sub 25 connectors
- 24-bit resolution
- Individually selectable input levels: +13 dBu, +19 dBu or +24 dBu
- AC-coupled inputs
- Fully balanced servo-balanced architecture
- Input impedance: 9.5 kΩ
- Channel separation greater than 110 dB
- Digital Connectivity:
- Coaxial MADI interface (BNC)
- Optical MADI interface via optional SFP module
- Two redundant Gigabit Ethernet AVB ports
- Word Clock input/output (BNC)
- MIDI interface (optional)
- USB 2.0 port for remote control and firmware updates
- Transmission of up to 128 audio channels via AVB depending on the sampling rate
- Audio Networking & Routing:
- AVB IEEE 802.1 & IEEE 1722.1 compatibility
- Architecture compliant with MILAN™ recommendations
- Internal single-channel routing matrix
- Routing capacity up to 288 × 256 channels
- Independent distribution of analog, MADI and AVB streams
- Advanced gain group management and synchronization control
- Fixed latency with guaranteed bandwidth
- Synchronization & RME Technologies:
- SteadyClock FS for ultra-precise synchronization
- SyncCheck® with continuous monitoring of clock sources
- ICC® (Intelligent Clock Control)
- MADI Auto Input for automatic redundancy
- Automatic switching in case of synchronization loss
- Optimized operation for mission-critical applications
- Control & User Interface:
- 2-inch color display
- Multifunction encoder for complete device control
- Real-time Peak/RMS level monitoring
- Tri-color backlit channel indicators
- Magnetic cover with customizable labels
- 15 configuration memories (Presets)
- Dark Mode
- Parameter locking with access code
- Remote control via HTTP, JSON API, IEEE 1722.1 ATDECC, USB and MIDI SysEx
- Power Supply & Installation:
- Two fully redundant internal power supplies
- Continuous power supply monitoring
- 19-inch rack - 1U format
- Designed for permanent professional installations
- Robust architecture designed for 24/7 operation
- Box Contents:
- RME M-32 AD Pro II
- Power cable(s)
- Documentation
Key Features:
- Reference 32-channel analog-to-digital converter designed for studios, broadcast, live sound and network audio infrastructures.
- 24-bit / 192 kHz conversion with up to 120 dB(A) dynamic range and extremely low distortion for perfectly transparent audio reproduction.
- Complete professional connectivity including coaxial MADI, optical MADI (optional), redundant Gigabit AVB, Word Clock, USB and MIDI.
- AVB and MADI compatibility enabling integration into modern audio networks with up to 128 channels transmitted over Ethernet.
- 288 × 256 internal routing matrix providing extremely flexible individual routing between all analog and digital interfaces.
- Exclusive RME technologies including SteadyClock FS, SyncCheck®, ICC® and MADI Auto Input for outstanding synchronization and reliability.
- Dual redundant internal power supply, comprehensive user interface, local or remote control and numerous features dedicated to critical installations.
- Intelligent channel identification with tri-color indicators, customizable labels and integrated configuration memories.
- Scalable professional architecture supported by RME firmware development and regular updates adding new features over time.
- The ideal solution for recording studios, broadcast facilities, immersive audio installations, AVB/MADI integrators, rental companies and professional audio infrastructures requiring a highly precise 32-channel analog-to-digital converter.
