At its time, this was the first audiophile review of the ADI-2 Pro. The product should have been outside of my comfort zone, but I had a hunch that this relatively small device had amazing potential. I reached out to RME which resulted in a friendship and might (or might not have) influenced following devices like the Anniversary Edition and the ADI-2 DAC.
In the original review, I highlighted the RME ADI‑2 Pro as a remarkably versatile device that convincingly excels as a DAC, headphone amplifier, and even ADC — though my focus remained squarely on its DAC and headphone amp performance. Housed in a robust metal chassis with intuitive controls and a clever spectral analyzer display, this unit feels built to serve both professional and audiophile needs.
As a headphone amplifier, the ADI‑2 comfortably handled everything from sensitive IEMs to demanding full-size cans, offering dead‑silent backgrounds, dual outputs with independent gain settings, and delightfully precise digital volume control with auto mode. Sonically, it delivers a rich, full-bodied presentation—warmer and less analytical than reference-grade amps, yet deeper and quieter than the competition .
On the DAC side, RME implemented dual AK4490 chipsets, enabling high-res decoding up to 768 kHz PCM and native DSD, with an optional non‑oversampling filter. The result is transparent yet inviting sound — tighter in treble, cleaner in low noise, and more forgiving on poor recordings than some ultra-analytical rivals.
Ultimately, the ADI‑2 Pro stood out as a “game changer” — a feature-rich powerhouse that offers pro-level flexibility with audiophile-grade sound quality, far punching above its price and reshaping expectations for performance and usability in a single, elegant package