RME ADI-2 Pro EX Reference AD/DA Converter & Dual Headphone Amplifier

RME ADI-2 Pro EX: New-Generation Reference Conversion and a Dual Headphone Amp

The RME ADI-2 Pro EX is a new-generation reference 2-channel AD/DA converter, multi-format converter, and dual headphone amplifier built on the acclaimed ADI-2 Pro platform. It converts PCM up to 768 kHz and DSD, drives two independent headphone outputs, and includes a full DSP processing suite in a compact half-rack desktop chassis. For the mastering engineer, measurement specialist, or headphone purist who wants a single reference device, the ADI-2 Pro EX is the endpoint the whole signal chain aims for. It is as much a precision instrument as it is an audio converter.

Reference Conversion Up to 768 kHz PCM and DSD

The ADI-2 Pro EX converts at extraordinary resolution, handling PCM up to 768 kHz and DSD up to DSD256, with 120 dB of dynamic range measured on its balanced XLR outputs. That range and sample-rate ceiling are why the unit doubles as an audio test-and-measurement front end, not just a converter. RME builds the AD and DA stages around a high-end AK4493 chipset tuned for transparency, so it captures and reproduces signal without adding character. Whether recording a critical stereo source or measuring another device, the ADI-2 Pro EX is the trustworthy reference.

Two Independent Headphone Amplifiers

Unlike a single-output converter, the ADI-2 Pro EX carries two headphone amplifiers: a 6.35 mm output for full-size headphones and a dedicated 3.5 mm output optimized for sensitive in-ear monitors. Driving IEMs and high-impedance studio headphones well requires different amplifier behavior, and having a dedicated output for each avoids the noise and mismatch of a single compromise amp. This new generation increases the available output power over the previous model for more authority on demanding loads. Two engineers, or two headphone types, can listen at once at full quality.

A Built-In DSP Suite: EQ, Crossfeed, and More

The ADI-2 Pro EX includes an onboard DSP engine offering parametric EQ, crossfeed, fade in/out, and a measurement-grade signal frontend. Crossfeed blends a small amount of each channel into the opposite ear the way loudspeakers naturally do, reducing the fatigue of hard-panned headphone listening. The parametric EQ lets you compensate for a headphone's response or tune a monitoring path without external gear. That processing turns the converter into a complete, self-contained reference listening and analysis station.

Universal Digital I/O and Switchable Output Levels

Connectivity is deliberately broad: AES, coaxial and optical SPDIF, and ADAT I/O let the unit convert between nearly any digital format, while lockable USB-C carries audio to and from a computer over a secure connection. Hardware-switchable XLR reference levels at +24, +19, +13, and +4 dBu match the outputs to professional or consumer gear exactly. That switchability sets where the maximum output sits relative to the connected device, ensuring correct headroom and level. As a result, the ADI-2 Pro EX slots cleanly between studio equipment and hi-fi systems alike.

Femtosecond Clocking and a Protected, Modern Chassis

SteadyClock FS, RME's femtosecond-class clock, keeps jitter negligible so both conversion and measurement stay accurate, regenerating a clean reference even from an imperfect source. The new-generation build adds practical refinements: DC-protected outputs and fuseless PSU protection guard against faults, a TS trigger output integrates the unit into control systems, and improved cooling with a chrome-footed chassis keeps it stable on a desktop. A lockable USB-C cable ensures the data connection cannot be knocked loose. These details are what separate a lab-grade reference from a consumer converter.

Who the ADI-2 Pro EX Is For

The ADI-2 Pro EX is built for the mastering engineer needing a reference converter and monitor, the audiophile and headphone enthusiast wanting powerful dual outputs with DSP tuning, the measurement engineer working up to 768 kHz, and the producer recording or playing back DSD. Its half-rack desktop form suits a mastering desk or a listening station equally. If you want one device that converts, measures, and drives headphones at reference quality, the ADI-2 Pro EX is the modern flagship of the line.