Etymotic ER2XR Extended Response vs FiiO FD15

What ER2XR Extended Response does better (0) and where FD15 wins (2) — every spec side by side.

0 advantages≈ $150

FiiO · 2024FD15

2 advantages≈ $180

Why is ER2XR Extended Response better than FD15?

ER2XR Extended Response has no measurable advantages in this pair.

Specifications

Only differences	Etymotic ER2XR Extended Response≈ $150	FiiO FD15≈ $180
Sound
Fit	In-ear	In-ear
Ear cup design	Closed-back	Closed-back
Driver type	—	Dynamic
Lowest frequency	20 Hz	10 Hz
Highest frequency	16,000 Hz	40,000 Hz
Impedance	15 Ω	32 Ω
Sensitivity	96 dB	112 dB
Hi-Res Audio	—	Yes
Connectivity
Wireless	No	No
3.5 mm jack / AUX	Yes	Yes
Design & build
Weight	—	12 g
Colours	Blue, Black	—