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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. |
- 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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Transmission Type: Wired
Headphone frequency response: 10 - 30.000 Hz
Nominal sound pressure level: 100 dB SPL
Sound coupling to the ear: Circumaural (around the ear)
Cable & Plug: Detachable cable – various connectors available
Polar Pattern For Microphone: Hypercardioid
Transducer type for microphone: Dynamic - Hypercardioid
| 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 |
Operating Principle: Closed
Transmission Type: Wired
Earpad material: Protein leatherette cover, memory foam filling
Nominal Impedance Headphones: 32 ohms
weight headphones without cable: 360 g
Headphone frequency response: 5 - 50,000 Hz
Nominal sound pressure level: 100 dB (1mW)
Sound coupling to the ear: Circumaural (around the ear)
Cable & Plug: 1.40 straight cable (double-sided), OCC 7N copper, textile braided, 3.5 mm jack plug with 6.35 mm jack adapter
| The SRH1840 Professional Open Back Headphones feature individually matched drivers for unparalleled acoustic performance, including smooth, extended highs and accurate bass. Developed with premium materials and precision engineering, the custom-crafted design is extremely lightweight and durable. Ideal for mastering or critical listening applications.
The included storage case, replacement set of velour ear pads, replacement cable, and threaded adapter ensure years of uninterrupted listening enjoyment.
Individually matched 40 mm neodymium drivers for unparalleled acoustic performance with smooth, extended highs and accurate bass
Open-back, circumaural design for exceptionally natural sound, wide stereo image, and increased depth of field
Lightweight construction featuring aircraft-grade aluminum alloy yoke and stainless steel grilles for enhanced durability
Steel driver frame with vented center pole piece improves linearity and eliminates internal resonance for consistent performance at all listening levels
Ergonomic dual-frame, padded headband is lightweight and fully adjustable for hours of listening comfort
Optimized for connection to external headphone amplification systems
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
Sensitivity
96 dB SPL/mW
Maximum Input Power
1000 mW
Frequency Range
10 Hz – 30 kHz
Weight
0.59 lbs (268 g)
Cable Style
Dual-exit, detachable oxygen-free copper
Cable Length
6.9 ft (2.1 m)
Plug
Gold-plated 1/8" (3.5 mm) stereo mini-jack |
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