BEYERDYNAMIC DT770 PRO 250 Ohm Headphones

HSC 171

Professional headset with cardioid, shock mounted, speech optimized condenser
microphone. Main application: Live-commentaries and broadcast. The microphone?s
frequency range is 20-20,000 Hz with a sensitivity of 25 mV/Pa. The required feeding
voltage is 9 to 52 V phantom-power. Impedance is 200 ohms. The headphone?s impedance
is 55 ohms with an audio bandwidth of 18-26,000 Hz. Type: supra-aural, closed-back
with self-adjusting headband. Microphone arm is swivelling through 270 degrees for
left or right-hand use with integrated mute switch. 10 ft (3m) coiled cable, with 6-pin
female mini XLR connector, ?? jack plug (headphones) and 3-pin XLR connector with
integrated HSC-PA phantom power adapter (microphone).
Net/shipping weight: 250/720g (8.8/25.2 oz.)

The SRH1440 Professional Open Back Headphones provide full-range audio with detailed highs and rich bass in a sleek, attractive design. Made for mastering and critical listening, the premium padded headband with steel frame offers hours of listening comfort.

The included storage case, replacement set of velour ear pads, replacement cable, and threaded adapter ensure years of uninterrupted listening enjoyment.



40 mm Neodymium drivers deliver full-range audio with rich, controlled bass
Open-back, circumaural design for exceptionally natural sound, wide stereo image, and increased depth of field
Impedance optimized for direct connection to wide range of portable audio devices
Fully adjustable, premium padded headband with steel frame and sleek, ergonomic design for hours of listening comfort
Oxygen-free copper cable with Kevlar® reinforced jacket for superior performance and durability
Dual-exit cables with gold-plated MMCX connectors provide secure connection and detachability for easy storage or replacement
Replaceable velour ear pads with high-density, slow-recovery foam for exceptional comfort
Individually tested and serialized
Legendary Shure durability to withstand the rigors of everyday use




Type
Open-back, circumaural
Frequency Range
15 Hz – 27 kHz

Cable Length
6.9 ft (2.1 m)
Plug
Gold-plated 1/8" (3.5 mm) stereo mini-jack

User's Manual

• Professional circumaural hi-fi stereo studio headphones
• Self-adjusting headband for optimum fit
• Patented Varimotion speakers
• High noise attenuation
• For onstage and studio use
• Automute feature mutes headphones when they are taken off
• Leatherette and additional velvet ear pads
• Single-sided, detachable 3 m cable and additional 5 m coiled cable

The newly designed AKG legend, K 271 MK II combines the benefits of AKGʼs circumaural design for extreme comfort and a closed-back design for maximum isolation from ambient noise. Thanks to its XXL transducers, the K 271 MK II sounds clean, smooth and very rich.

The K 271 MK II is the perfect choice for any application where sonic bleed could cause problems such as broadcast work.

Another important feature of the K 271 MK II is the addition of a switch in the headband that mutes the audio just as soon as the headphones are taken off.

By the way, the K 271 MK II is also available as a headset with dynamic microphone (HSD 271) or condenser microphone (HSC 271).

Technical Data

• Professional hi-fi stereo studio headphones
• Self-adjusting headband for optimum fit
• Patented Varimotion speakers
• High ambient noise attenuation
• For broadcast and DJ use
• Rugged construction for tough handling
• Leatherette ear pads and additional velvet ear pads
• Single-sided, detachable 3 m cable and additional 5 m coiled cable

The newly designed K 171 MK II combines the benefits of a closed-back design with the lightweight and comfort of supra-aural headphones.

The K 171 MK II is an excellent choice for DJ and broadcast applications where no sound can bleed from the headphones into live microphones.

The closed-back, loud and rugged design gives the K 171 MK II a different low-frequency character and maintains its comfort and flexibility.