Short answer: the Mackie MP-360, though neither ranks well in its class. It ranks #1199 of 1291 in-ear headphones by sound quality, rated 1.7/5, at $419.99. The Sennheiser IE 400 Pro ranks #1212, rated 1.5/5, at $399, $20.99 cheaper, which does not close the gap in sound quality. Both are rated below 3.0/5 among the 1291 in-ear headphones, so if sound quality matters, consider the Truthear Nova instead, ranked #2 at $169.99.
The case for the Mackie MP-360: Three balanced armatures with 15 ohm impedance and 117 dB/mW sensitivity make it effortless to drive from a phone or a stage belt pack. The catch: oratory1990’s measurement shows presence averaging 9.1 dB below target with an 11.2 dB dip near 2.8 kHz, so vocals and snare lose clarity and sound muffled.
The case for the Sennheiser IE 400 Pro: Bass is lifted about 3.1 dB with extension to 20 Hz, giving kick drums and bass lines extra weight. Watch for: Presence sits about 7.3 dB low with a 9.1 dB dip near 3.2 kHz, so vocals and instruments lose some bite.
Buy the Mackie MP-360. It is rated higher for sound quality, and the $20.99 you would save on the Sennheiser IE 400 Pro does not close the gap.
Still deciding? The full Headphones rankings cover every ranked option.
Three balanced armatures with 15 ohm impedance and 117 dB/mW sensitivity make it effortless to drive from a phone or a stage belt pack.
Amazon $419.99 eBay
Bass is lifted about 3.1 dB with extension to 20 Hz, giving kick drums and bass lines extra weight.
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Specifications Side By Side
| Mackie MP-360 | Sennheiser IE 400 Pro | |
|---|---|---|
| Price | $419.99 | $399.00 |
| Ranked | #1199 of 1291 in In-Ear Headphones | #1212 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | - |
| Harman Preference Score | 45 (measured by oratory1990, via AutoEQ) | 43 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 4.37 dB standard deviation | 4.11 dB standard deviation |
| Tonal Tilt | -0.50 (negative is warmer, positive brighter) | -1.37 (negative is warmer, positive brighter) |
| Sub-bass Extension | Falls 6 dB below target at 47 Hz (-7.6 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.9 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Balanced armature | Dynamic |
| Drivers | 3 x balanced armature | 1 x 7mm dynamic |
| Impedance | 15 ohms | 16 ohms |
| Sensitivity | 117 dB/mW | 123 dB/Vrms |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | 6Hz - 19kHz |
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