MAAT's DROffline MkII is a powerful batch measurement application designed to automatically analyze all mandated R128 loudness parameters alongside official DRi metrics and other critical audio measurements. Operating seamlessly in the background, this tool provides essential file-based metering for music production professionals. It supports 24 different measurement types, including integrated DRi Dynamic Range and the emerging AES standard for Sample Peak-to-Short Term Loudness Ratio, offering comprehensive insights that typical digital audio workstations might not display.

Users can evaluate a single file or process entire directories in batch mode while continuing their workflow uninterrupted. DROffline MkII generates detailed plain text and tab-delimited log reports, complete with optional engineer and studio metadata, facilitating professional documentation for clients. Its intuitive drag-and-drop interface simplifies access to audio statistics and metadata, and it integrates smoothly with DRMeter MkII to enable measurement directly within the DAW environment. This combination ensures fast, accurate, and secure loudness analysis without relying on cloud services.

Supporting a wide range of audio formats and sample rates from 44.1 to 384 kHz, DROffline MkII handles LPCM files such as WAV, BWF, AIFF, and lossless formats including FLAC and ALAC. It delivers mandated loudness measurements like Maximum True Peak, Integrated Loudness, Loudness Range, and momentary levels, plus supplemental metrics like separate left and right channel readings, RMS values, and minimum PSR. The software is cross-platform and optimized for quick local processing, making it an indispensable tool for ensuring loudness compliance, high-resolution audio support, and precise file-based loudness documentation.