Earphone Abbreviations and Acronyms

1. ER
   Etymotie Research
2. HF
   High-Fidelity
3. HF
   High Fidility
4. HF2
   Host Flag 2
5. HFR
   High Frequency Receiver
6. HI-FI
   High-Fidelity
7. PFE
   Perfect Fit Earphones
8. PFES
   Perfect Fit Earphones
9. PTH
   Push-To-Hear
10. PTH
    Push To Hear
11. RM
    Remax Metal
12. TWS
    Ture Wireless Stereo
13. TWS
    Twins Wireless Sport

Last updated: January 4, 2020 — Total entries: 13