What are the benefits of the extended phase linearity mode (EPL)?

Phase linear performance across both cross-over points of a 3-way coaxial monitor raises the bar
for uncompromised reproduction even further, including improved stereo imaging focus and precision,
enhanced off-axis performance and more stable Ultra Nearfield (UNF) imaging. Because Genelec two-way Smart Active Monitors already feature linear phase down to about 100 Hz, GLM 4.1 therefore also
improves the performance of systems that blend The Ones (8331A, 8341A, 8351B, 8361A) and other Smart Active models.