EQ 01 M / S is a 3-band equalizer designed to process mid and side channels independently. It converts incoming stereo signals into mid/side format, applies equalization separately to each channel, and then transforms the signal back to stereo. This approach allows precise control over the stereo image, enhancing the clarity and balance of your mix.

The plugin also features an encoder mode, enabling it to work effectively in combination with other mid/side tools or as a standalone equalizer. Its design supports integration with compatible components, providing flexibility for various mixing and mastering workflows. EQ 01 M / S is part of the SPAZIAL product line, known for its high-quality spatial audio processing.

Available as donationware without activation requirements, EQ 01 M / S offers an accessible solution for users seeking detailed mid/side equalization. Its straightforward interface and precise control make it suitable for improving stereo width and tonal balance in music production and post-processing.