| Content |
With the K550s, AKG engineers have struck a masterful balance between the noise-isolating qualities of closed-back headphones and the spacious, dimensional sound of an open-back design creating reference-class headphones ideal for private listening both at home and on the go. 50mm drivers, the largest in our product line, deliver great AKG sound from your hi-fi system or virtually any portable device.The large ear cups and new headband design ensure an amazingly comfortable fit, and the 2D-axis mechanism folds flat to stow or go. | 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 SRH440 Professional Studio Headphones from Shure provide exceptional sound reproduction and comfort.
Optimized for home and studio recording, SRH440 headphones reproduce accurate audio across an extended range.
Impedance, power handling and sensitivity are all calibrated for professional audio devices such as DJ mixers, mixing consoles, and headphone amplifier. Includes carrying bag and threaded 1/4" (6.3mm) gold plated adapter.
Enhanced frequency response delivers accurate audio across an extended range
Impedance and power handling optimized for perfomance with professional audio devices
Adjustable headband and collapsible construction provide comfort and portability
Bayonet clip securely locks detachable cable into ear cup
Sensitivity
105 dB
Maximum Input Power
500 mW
Frequency Response
10 Hz - 22 kHz
Weight
9.6 oz (272 g)
Cable Length
3 meters (9.84 ft)
Cable Style
Detachable coiled oxygen-free copper
Plug
Gold-plated 1/8" (3.5 mm) stereo mini jack
| 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 |
|
- Professional hi-fi stereo studio headphones
- Semi-open, circumaural design
- Self-adjusting headband for optimum fit
- Patented Varimotion speakers
- Leatherette ear pads and velvet ear pads
- Single-sided, detachable 3 m cable and additional 5 m coiled cable
The K 240 MK II is a newly updated version of AKGʼs most successful headphones with Varimotion™ technology and XXL transducers. The K 240 MK IIʼs semi-open ear cups have around-the-ear coupling to deliver solid bass, accurate mids and crystal-clear highs.
Thanks to its lower impedance and improved sensitivity, it can be used with low-output audio sources to deliver its incredible sound.
The detachable OFC cable has gold-plated plugs for optimum audio quality and exceptional ease of service.
| Type |
semi-open, dynamic headphones |
| Sensitivity |
91 dB/mW, 104 dB/V |
| Frequency range |
15 to 25,000 Hz |
| Rated impedance |
55 ohms |
| Max. input power |
200 mW |
| Earpads |
leatherette and 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) |
|
- 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.
| Type | closed-back, dynamic headphones | | Sensitivity | 94 dB/mW, 107 dB/V | | Frequency range | 18 to 26,000 Hz | | Rated impedance | 55 ohms | | Max. input power | 200 mW | | Earpads | leatherette and 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) | 200 g (7.1 oz.) | | Shipping weight | 500 g (17.6 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) |
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