ABYSS AB-1266 PHI TC
https://abyss-headphones.com/pages/abyss-ab-1266-phi-reference-headphone
- Frequency Response: 5 Hz to 30 KHz
- Impedance: 47 ohms nominal
- Phase: Flat
- Sensitivity: 88 dB/mW
- Distortion: Less than 1%; Less than 0.2% through ears most sensitive range
- Weight: 640 grams