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GMP 250
Headphone HANDCRAFTED IN GERMANY
This closed headphone with superb acoustical features is ideally suited for all those who attach importance to dynamic response. The extremely clear bass and the fine reproduction of the mid- and high frequency ranges enables the GMP 250 to set benchmarks in its class. The cardamatic suspension with its highly flexible head-bow and adjustable headband ensure excellent long-term comfort and fit.
Technical Data
Frequency Response: 13 - 20.400 Hz
Nominal Impedance: 100 O
Acoustical Principle: Closed
Ear Pads: Synthetic leather, circumaural
Average pressure on the ear: ~3 N
Weight w/o cable: 220 g
Connector: Stereo-Multi-Jack 3,5 / 6,3 mm
Spiral cable 1,5 / 3 m
| K 240 Studio
The Studio version of these classic hi-fi stereo headphones uses XXL speakers
with Varimotion diaphragms for higher sensitivity, a wider dynamic range, and
higher sound levels. Other features include semi-open earphones, a solid bass
range, clear highs, and excellent comfort.Also connects to portable equipment
(CD players, DAT recorders, notebook computers, etc.)
SPECIFICATIONS:
General Specifications
Headphone type: semi-open
Max. Input Power: 200 mW
Sensitivity headphones: 104 dB SPL/V
Rated Impedance: 55 Ohms
Detachable cable: yes
Cable Length: 3 m
Earpads replaceable: yes
Audio Specifications
Maximum input power: 200 mW
Audio frequency bandwidth: 15 - 25000 Hz
Dimensions
Length: 110 mm
Width: 190 mm
Height: 200 mm
Net Weight: 240 g
Audio Interface
Type: Stereo plug – 3.5mm (1/8-inch) with 6.3 mm (1/4") screw-on adapter
Gender: Male
Contacts: 3-pin
Cable
Detachable: Yes
Wearing Style
Over-ear: Yes
Application
Studio Mixing: Yes
Hi-Fi Listening: Yes
Foldable
Not foldable: Yes
Cup Style
Semi-open: Yes |
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
![acrobat_reader_logo.]( "acrobat_reader_logo.") User's Manual
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- 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.
| Type |
closed-back, dynamic headphones |
| Sensitivity |
91 dB/mW, 104 dB/V |
| Frequency range |
16 to 28,000 Hz |
| Rated impedance |
55 ohms |
| Max. input power |
200 mW |
| Earpads |
leatherette und velvet |
| Cable |
3 m single-sided and 5 m coiled cable (99,9% oxygen-free); plug-in cable on headphones (mini-XLR connector) |
| Connector |
gold plated stereo mini jack |
| Adapter |
gold plated 1/8" to 1/4" screw-on adapter |
| Net weight (without cable) |
240 g (8.5 oz.) |
| Shipping weight |
550 g (19.4 oz.) |
| Patent(s) |
Varimotion – multiple-thickness diaphragm for dynamic transducer (Patent no. AT 403.751, US 6,185,809, EP 814.637 (DE, DK, FI, FR, GB, IT, NL), JP 3.927.651); Acoustics slot resistor for dynamic transducer (Patent no. AT 408.706, US 6,639,991, ZL 01116806) |
|
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.)
| DT770 Closed headphone for drummers and monitoring purposes (FOH), with extreme isolation against ambient noise.
The dynamic, closed DT 770 M has especially been designed for drummers and FOH monitoring. The strengthened headband and the softskin ear pads provide an excellent isolation against ambient noise. The single sided straight cable allows a volume control directly at the headphone.
▲ Closed headphone
▲ Excellent ambient noise attenuation (35 dBA)
▲ Superb sound quality with high sound pressure level (105 dB)
▲ Extended frequency range
▲ Single-sided cable with volume control
▲ Robust, easy serviceable construction as all parts are replaceable
▲ Excellent comfort for long-term wearing, softskin ear pads
▲ Secure and comfortable fit due to rugged, adjustable headband construction with soft padding
▲ Single-sided cable
▲ Supplied in a carrying case (nylon)
| Transmission type |
|
Wired |
| Headphone design (operating principle) |
|
Closed |
| Headphone impedance |
|
80 ohms |
| Headphone frequency response
The frequency response specifies the highest and lowest frequencies reproduced by the acoustic transducer of the headphones. |
|
5 - 30.000 Hz |
| Nominal sound pressure level
The (nominal) sound pressure level is the pressure in pascals (Pa) with which the air and the eardrum are caused to vibrate, better known as the volume. The sound pressure level is therefore a measure of the volume of a set of headphones under standardized conditions. However, it says nothing about whether the distortion is low and the sound is good at such a high volume. |
|
105 dB |
| Construction |
|
Circumaural (around the ear) |
| Cable & plug |
|
Straight connecting cable with mini-jack plug (3.5 mm) & ¼" adapter (6.35 mm) |
| Net weight without packaging |
|
300 g |
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