Etymotic ER4XR
In-Ear Monitor (IEM)
Headphones$310Manufacturer list price
Specifications
- Type
- Headphones
- Description
- In-Ear Monitor (IEM)
- Topology
- balanced-armature (single)
- Signal path
- Analog
- Channels
- 2
- Channel format
- Stereo
- Form factor
- in-ear monitor
- Connection
- 3.5mm TRS (passive)
- Powered
- No
- Drivers
- Single balanced-armature driver per channel
- Frequency response
- 20 Hz - 16 kHz
- Max SPL
- 122 dB
- Sensitivity
- 98 dB @ 1kHz, 1mW
- Impedance (Ω)
- 45
- Back design
- in-ear (deep insertion)
- Introduced
- 2016
- Country of manufacture
- USA
Details
I/O: Detachable 5 ft twisted cable with customized MMCX connectors, terminated in 3.5mm gold-plated stereo plug
Notable use: Extended Response (XR) tuning: same reference midrange/treble accuracy as ER4SR with an intentional low-bass lift
Notes: Single BA per channel (not dual); shares driver platform with ER4SR, differs only in tuning (added bass). Channels matched within 1dB, 100Hz-10kHz. Deep-insertion isolation 35dB (silicone)/42dB (foam). Price is MSRP per etymotic.com. Country of manufacture (USA) per retailer-mirrored Etymotic copy, moderate confidence. Sold separately (also offered bundled with Etymotion wireless BT cable at lower price, not catalogued here as a distinct model).