64 Audio tia Trió Universal In-Ear Monitor (B-Stock) headphone proprietary 2-pin The Fostex RPmk3 series headphones

The Fostex RPmk3 series headphones are successors to the reputed RPmk2 series

You need the Groundhog+

Headphones that react to you

and a choice of 2

both models are identical as they feature identically designed acoustic transducers

64 Audio tia Trió Universal In-Ear Monitor (B-Stock) headphone proprietary 2-pin The Fostex RPmk3 series headphones64 Audio tia Tri Universal Fit Earphones Features: Anodized Aluminum Shells Universal Fit w TrueFidelity Foam Tips Internal apex Technology tia system: tia drivers, single bore, acoustic chambers FXC Frequency eXtension Chamber LID Technology The 64 AUDIO tia Tri Universal Fit earphones are the perfect balance between reference quality sound and personal entertainment. Featuring a fully tubeless design, the breakthrough patent pending tia system