Beyerdynamic DT 797 Closed Headphone with Condenser Gooseneck Microphone Boom

The powerful headphone systems with a frequency response of 5 - 30,000 Hz provide a perfect reproduction and a balanced sound characteristic. The noise-attenuating housing and the soft, circumaural leatherette ear pads provide excellent isolation from ambient noise. The new, pivoting gooseneck microphone boom can be set into any required position so that the microphone can be used from the right or left-hand side. When not in use, the microphone can be turned to the upper position. The condenser microphone is provided with a larger capsule with improved bass response. The cardioid polar pattern ensures a high gain-before-feedback and noise cancellation. In order to avoid damage, the cables in the headband and gooseneck boom are covered. The single-sided cable provides a 6.35 mm stereo jack plug (1/4") and a 3-pin male XLR connector.

Features

Excellent ambient noise attenuation
High-quality cardioid condenser microphone for improved bass response and with high gain-before-feedback
Very high speech reproduction quality and excellent intelligibility
Pivotable, flexible gooseneck for optimal positioning with shock-mounted microphone
Robust, serviceable design as all part are replaceable
Single-sided connecting cable
Closed headphone
Rugged headband construction
Adjustable, soft padded headband
Circumaural soft ear pads

Specifications:

Headphone
Transducer type: . . . . . . . . . . .Dynamic
Operating principle: . . . . . . . . . . .Closed
Nominal frequency response: . . . . . . . . . . .5 - 35,000 Hz
Nominal impedance: . . . . . . . . . . . .250Ω / system
Nominal input voltage: . . . . . . . . . . .2.8V (= 100mW at 250 Ω) = 120dB SPL
Nominal sound pressure level at 1 kHz: . . . . . . . . . .100 dB
T.H.D.: . . . . . . . . . . .<0.2%
Ambient noise attenuation: . . . . . . . . . . .approx. 20 dBA
Average pressure on ears: . . . . . . . . . . .approx. 4.5 N
Connector: . . . . . . . . . . .6.35mm stereo jack (1/4”)
Weight (without cable): . . . . . . . . . . .395 g (0.87 lb)

Microphone
Transducer type . . . . . . . . . . . .Condenser (back electret)
Frequency response: . . . . . . . . . . .40–20,000Hz
Polar pattern: . . . . . . . . . . .Cardioid
Output voltage at a distance of 5 cm: . . . . . . . . . . .5.5 mV/Pa
Nominal impedance: . . . . . . . . . . .300Ω
Nominal output impedance: . . . . . . . . . . .≥ 1000Ω
Open circuit voltage: . . . . . . . . . . . .5 mV/Pa at f = 1 kHz
Max. SPL: . . . . . . . . . . .136 dB
S/N ratio: . . . . . . . . . . .64 dB
Current consumption: . . . . . . . . . . < 6 mA
Phantom supply: . . . . . . . . . . .12–48V
Connector:  . . . . . . . . . .3-pin XL R male
Gooseneck length: . . . . . . . . . . 120 mm (4.72")
Capsule diameter: . . . . . . . . . . 19 mm (0.75")
Weight: . . . . . . . . . . 30 g (0.07 lb)