FiR Audio M4

Review of FiR Audio M4 hybrid IEM with DD/3BA drivers. Continue reading FiR Audio M4

FIR Audio M5

Review of FIR Audio M5 hybrid DD/3BA/ESTAT IEM (production tuning). Continue reading FIR Audio M5

Review of pre-production FIR Audio M5 hybrid IEM with DD/BA/ESTAT drivers. Continue reading FIR Audio M5 (pre-production)