Beyerdynamic

Sony

T 51 P

MDR-1A-B

Wired Headphone Specification

Wired Headphone Specification

Over Ear

Over Ear

Neodymium

Neodymium

NA

40mm Dynam

32 Ohms

24 Ohms

111 dB/mW

105 dB/mW

10 Hz - 23000 Hz

3 - 100,000Hz

100 mW

1,500 mW (IEC*)

NA

NA

Black, Grey

Black

3.5 mm Gold Plated Jack

3.5 mm Gold Plated Plug

1.2 m

1.2m Silver-coated OFC cable

174 g

225 g

- Perfect for mobile use
- Excellent ambient noise attenuation
- Tesla technology with highest efficiency
- Swivelling earcups 90°
- Outstanding balanced and powerful sound quality with brilliant treble and deep bass reproduction
- Incl. rugged nylon carrying case
- Incl. 1/4" jack adapter (6,35 mm)
- Incl. in-flight adapter

- High-Resolution Audio 40mm HD driver unit
- Aluminum-coated Liquid Crystal Polymer Diaphragms for absolute clarity
- L/R separated ground cable for reduction of cross talk 
- Silver-coated Oxygen-Free Copper cable
- Hands-free calls with in-line remote and microphone
- Comfortable, ergonomic ear pads
- Plug - Gold-plated L-shaped Stereo Mini; Four-Conductor Gold-plated L-shaped Stereo Mini

Microphone
- Unit/Type : Electret Condenser
- Open circuit voltage level : -40dB(0db=1V/Pa)
- Effective Frequency of Microphone : 20Hz-20,000Hz