Meze Audio 109 Pro

FEATURES:

Dynamic open-back circumaural headphone; 
Driver features the 109 series Dual Membrane Diaphragm - a combination of Beryllium-coated polymer, cellulose + carbon fiber composite and copper-zinc alloy;
Easy to drive from most devices, from portable sources to full home setups;
Carbon fiber headband
Dark walnut wood earcups, zinc, manganese steel, vegan leather headband and soft velour earpads for a comfortable, lightweight, yet highly durable structure.

TECH SPECS:

Transducer Size: 50 mm
Frequency Response:  5Hz - 3 0KHz
Sensitivity: 112 dB SPI at 1 KHz, 1 mW
Impedance: 40 Ohm
Earcups: Walnut Wood
Headphone termination: 3.5 mm TRS jack
Weight: ~375 g (13 oz) without cables

INCLUDED ACCESSORIES:

Case: Hard EVA pouch
Included adapters:      
- 6.3 mm gold-plated jack
Standard cables:  
- mono 3.5 mm to 3.5 mm (1/8 in), 1.5 m (4.9 in) soft TPE cable with black aluminum casings  
- mono 3.5 mm to 3.5 mm (1/8 in), 3 m (9.8 in) soft TPE cable with black aluminum casings