Interesting to compare the two. The FV25HP has more mid-bass output, as I would have expected from its more sensitive drivers. It also has more infrasonic output below 16Hz since its tuned deeper. In general, the M215 does surpass it in deep bass at 40Hz and below. The M215 also has lower distortion at high output levels, but the distortion of either one is too low to matter.\n\nWithout measurements, how can you tell that the M215 has lower distortion levels?