EM258 EM172/EM272 Self-Noise Comparison by Douglas Langley published on 2020-12-05T19:40:30Z Quick self-noise comparison of Primo EM258 (aka Lom mikroUsi) vs Primo EM172/272 (aka Clippy, aka Lom Usi). EM258 is rated at 20dBA and EM172/272 is rated at 14dBA. The difference is noticeable indoors, but not so much outdoors in the situations I have tried so far (not super quiet). Comment by Jared Blake I love these comparisons of yours. After clicking back-and-forth, I think there is a large difference between the two. The EM172/272s sound much less hissy to me 2020-12-06T16:03:04Z