In-Ear Monitors · Balanced armature
Shure SE425

The Shure SE425 is an in-ear monitor from Shure's Sound Isolating Earphones line, built with dual balanced-armature drivers. It ships with a detachable cable, interchangeable sound isolating sleeves, adapters, and a carrying case.
Specifications
| Frequency response | 20 Hz – 19 kHz |
| Sensitivity | 109 dBSPL/mW |
| Impedance | 22 Ω |
| Weight | 30 g |
As stated by the manufacturer — not community data.
Will it drive? · On paper
Plays straight from a phone
A phone or laptop reaches full listening level. An amp is a choice, not a requirement.
| Needs, for 110 dB peaks | 0.17 V · 1.3 mW |
| Phone or laptop (≈0.70 V, 20 mW) | Enough |
| Dongle DAC/amp (≈2.0 V, 120 mW) | Enough |
Worked out from the stated 109 dB/mW and 22 Ω — not a listening test.
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