One week after CES and I thought we will be quiet for a while - wrong! This week Westone officially announced the latest addition (and best yet) to their custom IEM offering with the new ES3X. For a company that took almost two years to finalize their top universal IEM (Westone 3 that is), Westone certainly surprised people with this custom IEM as it only takes them a few short months from pre-production to final production. No doubt that they have included the knowledge and experience they learned from developing Westone 3 into the new custom.

- Driver unit: Three balanced armature drivers with a passive three-way crossover
- Frequency Response: 20Hz~18 kHz
- Impedance: 56 ohm
- Sensitivity: 124dB / 1 mW
- Plug: 3.5mm
- Cable length: ~50 inches.

- Driver unit: 13mm
- Frequency Response: 20Hz~20 kHz
- Impedance: 24 ohm
- Plug: 3.5mm ( 3-pole)
- '1 to 2' user switch, dual volume controls