Compared against the nearly identically sized Fostex TH-X00 headphone from Massdrop outfitted with mahogany gloss-lacquered earcups, the sound between the
Fostex TH-610 and the TH-X00 is very nearly the same in the mids/highs. However, the Massdrop TH-X00 offers a much bigger low-end kick that adds a lot of slam to the bass response, but which can also be a bit over-exaggerated and almost verging on the boomy at times. Big bassheads may gravitate toward the TH-X00 but we feel the Fostex TH-610 is likely the better balanced, more evenly toned headphone.