OH10 Obsidian

Tonal Profile

A titanium-coated polymer dynamic with a Knowles 33518 armature above it, in a brass shell that makes the thing noticeably heavy for its size. iKKO names the armature model, which is rarer than it should be.

Gain Staging Advice

106 dB/mW at 18 Ω is about 123 dB/V. The hybrid crossover means source output impedance shifts tone here, not just level — the usual caveat for anything with an armature in it.