A dual balanced-armature IEM that lists at about $299 and sells for $249–260 on the street. The one point nearly everyone agrees on is isolation: lab measurements, critics and three large owner sets all rank it among the best. Three independent measurement rigs agree closely on its shape: a flat midrange, about 9 dB less sub-bass than a typical in-ear target, a dip at 4–6 kHz, a narrow peak near 7–8 kHz and a steep fall above 10 kHz. Almost everything else divides along that graph. Most sources hear the bass as light, though a minority praise it as tight and accurate. The forward midrange is loved by vocal and stage users but called unnatural or 'boxy' by others. The treble splits three ways: smooth, rolled off, or sharp. 'Neutral reference' and 'coloured and mid-centric' get roughly equal support. Detail impresses most critics but not measurement-led hobbyists, and the soundstage is widely called small. Fit is comfortable for most but seal-dependent and fiddly for some. Build is mostly praised, with a minority reporting broken nozzles and worn connectors. Value is the sharpest split: the older press saw a bargain, while recent critics and many owners say cheaper modern IEMs do more.
About this product
Shure's 2010 dual-driver monitor: two balanced armatures (a woofer and a tweeter) in the same low-profile over-ear shell as the rest of the SE line, with a detachable MMCX cable. The clear SE425-CL is the current version — 'SE425 Pro' only means the audio-only cable — and the earlier metallic-silver SE425-V shares the tuning; the Bluetooth bundles are the same earphone plus an adapter. It replaced the SE420 and sits between the single-driver SE215/SE315 and the triple-driver SE535. US dealers list it at about $299, with street prices nearer $249–260.
The Shure SE425 arrived in 2010 as the middle rung of Shure's sound-isolating range: two balanced armatures, one for the lows and one for the highs, in the same flush, over-the-ear shell as the cheaper SE215, with a detachable MMCX cable and a hard case. It was built as a musician's monitor, and for a decade it was the step up that drummers, singers and commuters bought when the SE215 wasn't enough.
Its reviews read like two generations talking past each other. The press of the early 2010s — What Hi-Fi?'s five stars, Trusted Reviews, T3 — called it detailed, refined and the best in-ear money could buy at the price. A later wave of hobbyists, comparing it with cheaper Chinese IEMs, hears a mid-forward, bass-light tuning that rolls off the top octave and costs too much. Measurements on three independent rigs explain a lot of that argument.
