| Content | Compact high end portable Bluetooth earphones with ergonomic for an outstanding all-day listening experience. With an integrated microphone, a six-hour battery life and a luxurious leather case, the MOMENTUM Free is the perfect companion for the mobile lifestyle.
Delivery Includes
Wireless Headset
USB Charging Cable
Ear Adaptor Set (XS, S, M, L)
Carrying Case
Safety & Quick Guides
| Frequency Response: |
15Hz - 22000Hz |
| Total Harmonic Distortion: |
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Sennheiser's RS 165 is a superb digital wireless headphone system for movie watching and music. Its ergonomic, closed, circumaural design reduces background noise while providing an exceptionally comfortable fit, so that you can focus on enjoying your favorite television programs and movies.Easy to use and intuitive, all you need to do is to connect the included multi-purpose transmitter to your home audio or entertainment system. And because these headphones are from Sennheiser, you can count on a vibrant, detailed sound reproduction. Youʼll also be free to move around, since the RS 165 provides a robust, digital wireless audio transmission with minimum latency, and there is a bass boost listening mode for added power.
Sennheiserʼs RS 165: Get more from your TV and home audio today!
Features -
Closed, circumaural headphones with excellent digital wireless audio transmission
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High-quality Sennheiser transducers and a selectable Bass Boost mode for vibrant sound
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Intelligently designed controls for maximum ease of use
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Multi-purpose transmitter – also functions as ʽeasy-chargeʼ cradle and docking station
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Multi-receiver transmission – transmitter supports up to two pairs of headphones simultaneously
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Ergonomic design for enhanced wearing comfort
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2-year warranty
Type:
| Wireless Headphones Digital | | Frequency Response: | 18 - 21000 Hz | | Total Harmonic Distortion: | |
| The Audio-Technica ATH-M50xBTs are the Bluetooth version of the M50x wired headphones we gave four stars to around four years ago. This Bluetooth version behaves and performs in much the same way as that tethered stablemate – and that is pretty much a positive thing across the board.
You get a fair amount for your money here – and, most importantly, a good listen when you’re out and about.
The Bluetooth 5.0 version of the ATH-M50x looks and feels similar to its wired sibling, which means good-quality plastics on the earcups and headband, and well-padded earpads.
While these headphones don\'t have active noise-cancelling, the over-ear design, with those fairly thick pads, nevertheless makes an effective seal against the outside world for decent passive noise-exclusion.
The left earcup houses all the clever tech, with a switch to turn Bluetooth on and off, three buttons – for volume up, volume down (those buttons also acting to skip tracks forward or back with a longer push), and play/pause and end phone-calls. In among the buttons there are also sockets for the micro-USB charging cable and 3.5mm headphone cable – both of which are supplied, along with a storage pouch.
Finally, there\'s a touch panel in the middle of the left earcup, which complements the visible buttons on its edge. Pressing this allows access to the speech-recognition assistant on your device (Siri, Google assist etc).
The headphones are certainly designed with portability and out-and-about listening in mind. They fold up to about half-volume with a push of the ear-cups up into the headband, the joints swivelling and folding to accommodate as necessary. The storage pouch provided is barely big enough to house the cans in that state, but manages as a protective measure inside a bag.
The cable provided – which has a mic and play/pause/answer call button – is just 1.3m long; enough for listening on a commute, but not really suitable for home listening. In a change from the non-Bluetooth pair, the 3.5mm connection isn’t a push and twist affair, but it is still not quite standard, with a recessed section to allow a firm fit. That means care will need to be taken if you want to invest in a longer cable.
Audio-Technica claims a 40-hour battery life for the headphones’ Bluetooth functionality, on a full charge of around seven hours. The headphones beep to warn you that the battery is running low.
Setting up your headphones is a simple operation; just slide the button on the earpiece and the unit will be discoverable. For any additional devices, just make sure the headphones aren’t already connected to another unit – that is the only issue we have with connecting via Bluetooth.
Once set up, the ATH-M50xBTs are an enticing, easy listen. The midrange is particularly impressive, with vocals and the jangly guitar coming across crisp and clear in a Tidal Masters stream of The Jackson 5’s I Want You Back.
The track as a whole is conveyed with suitable verve and joy and has our foot tapping in no time. It’s extremely easy to get lost in the music – which is pretty much ideal in a pair of cans such as this.
However, the track also highlights one notable blemish to the sound. Once that familiar bassline kicks in, it takes position somewhat to the fore of proceedings – it’s not a huge issue, but it is certainly true that these headphones are fans of the lower registers in a way that\'s not altogether authentic.
That forward bass does contribute to the easy-listening and warm nature of these cans, and there are no issues with overly sharp or bright treble notes, but some rivals will offer a more purist, precise rendition of the music.
For many people on their daily commute that simply won’t be an issue – and indeed, for much of our time with the ATH-M50xBTs it isn’t for us – but it’s something to be at least considered.
The earpads make an effective barrier against the outside world, and commuting with the Audio-Technicas, we feel nicely cocooned against any distractions – while still being able to hear any important announcements.
But, after a while, our ears get rather warm. While that’s a positive bonus in the wintry February air, it may well become more of an issue in the warmer months. That said, the fit and comfort of the earpads is decent, even for those wearing glasses, and while the fit is firm, it is not uncomfortable over extended listening periods.
Specifications
Type
Closed-back dynamic
Driver Diameter
45 mm
Magnet
Rare earth
Voice Coil
CCAW (Copper-clad aluminum wire)
Frequency Response
15 – 28,000 Hz
Sensitivity
99 dB
Impedance
38 ohms
Battery
DC3.7 V lithium polymer rechargeable battery
Battery Life
Approx. 40 hours continuous use
Charging Time
Approx. 7 hours (for 0-100% charge)
Weight
310 g without cable and connector
Cable
Detachable 1.2 m iS controller cable with mic
Connector
3.5 mm (1/8″) stereo mini-plug
Accessories Included
30 cm (1.0′) USB charging cable, protective pouch
Type (Microphone)
Condenser
Sensitivity (Microphone)
-42 dB (1V/Pa at 1 kHz)
Frequency Response (Microphone)
80 – 10,000 Hz
Polar Pattern (Microphone)
Omnidirectional
Input Jack
Micro USB Type B
Communication System
Bluetooth Version 5.0
Maximum Communication Range
Line of sight – approx. 10 m (33′)
Compatible Bluetooth Profiles
A2DP, AVRCP, HFP, HSP
Support Codec
aptX, AAC, SBC
Accessories Included
30 cm USB charging cable
Protective pouch
Detachable 1.2 m iS controller cable with mic | EXCEPTIONAL WIRELESS SOUND QUALITY
Enjoy your music and entertainment wirelessly. Hi-Res certification, built-in support for AAC and aptX HD Bluetooth ensures the highest quality sound.
Next-Generation Noise Cancellation
The Denon next-generation proprietary active noise cancelling system utilizes dual microphones on each earcup and three noise cancellation modes designed for air travel, commuting and the office. Each mode is specifically designed to reduce or eliminate ambient noise found in your environment. Listen to music, make calls, watch movies and concentrate on your work, free from distracting noise.
Designed for Extended Wear
Ideal for frequent air travel and long commutes with a soft, adjustable headband, and dual-movement memory foam earcups ensure a perfect fit and hours of comfort that’s never fatiguing.
Calling on the Go
Even in the loudest places, hear every word of your phone call. Connect via Bluetooth or use the included cable that features an in-line remote. Dual microphones deliver remarkable voice clarity when making and receiving phone calls and contribute to the exceptional noise cancellation performance.
Full Accessory Kit Included
Lightweight, wireless and foldable, the AH-GC30 is designed for those on the go. Included is a deluxe carrying case for the headphones and accessories, a USB Micro-B cable to charge the lithium-ion battery from any USB charger or computer USB port, and an audio cable with built-in inline microphone and remote for wired listening.
New FreeEdge Driver for Superior Sound
Denon-exclusive FreeEdge driver design, usually reserved for ultra-premium headphones, cancels out unwanted resonances to provide detailed, accurate sound. Soft, pliant surround materials allow the drivers to deliver crisp highs, deep bass and precise imaging without flexing or distorting the music signal, ensuring the best possible acoustic experience.
Extended Battery Life
Enjoy up to 20 hours of wireless listening. The included USB Micro-B cable lets you charge the lithium-ion battery from any USB charger or computer USB port. The battery recharges in just two hours. Even if the battery is depleted, take calls and listen to your music with the included 3.5mm audio cable.
cVc (Clear Voice Capture)
Along with aptX HD wireless audio coding that provides CD quality audio, Clear Voice Capture, a sophisticated noise reduction system, enhances received audio quality. It provides noise suppression, adaptive equalization, automatic gain control, echo cancellation, wind noise reduction and noise dependent volume control to deliver the clearest vocal quality, even in harsh noisy environments.
Auto Standby
Never forget to turn off your headphones. Save your battery. Set headphones to turn off automatically due to inactivity.
New Ambient Monitor
Tap to listen. Hear the flight attendant’s announcements or quick in-office conversation with the built-in ambient monitor. Simply tap the AH-GC30 earcup and the built-in microphone ensures you hear the outside world.
Headphone section
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| Type: |
Dynamic type |
| Drive units: |
φ40 mm |
| Impedance: |
16 Ω/ohms |
| Sound pressure sensitivity： |
98 dB/mW |
| Maximum input： |
1,000 mW |
| Playback frequency: |
5 – 50,000 Hz |
Bluetooth section
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| Compatible standards: |
Bluetooth Ver. 5.0 |
| Transmission power class: |
Max. transmission power 10 mW (Class 1) |
| Compatible profiles: |
A2DP/AVRCP/HSP/HFP |
| A2DP codec support: |
aptX HD/aptX/AAC/SBC |
| Continuous playback time: |
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| Bluetooth function ON + noise cancellation function ON： |
Approx. 20 hours |
USB audio component
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| Supported format: |
PCM 16-bit / Sampling frequencies: 48, 44.1, 32 kHz |
| Supported device class: |
Audio device class ver.1.0, HID class ver.1.11 |
General
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| Operating temperature range: |
5 ℃ - 40 ℃ |
| Power supply: |
DC 3.7 V (internal lithium polymer rechargeable battery) |
| Weight: |
287 g |
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Technical Data :
Headphones
- Frequency response :17 - 22,000 Hz
- Max. sound pressure level 114 dB at 1kHz, 3% THD
- THD, total harmonic distortion 90 dBA
Modulation 8-FSK Digital
Carrier frequencies 2.4 – 2.48 GHz
What\'s in the box?
HDR 175 headphones
TR 175 transmitter
Optical cable
Audio cable
Power supply with 4 adapters (EU, UK, US & AU)
2 AAA NiMH rechargeable batteries
Quick guide |
PRESENCE™ Grey UC is for the mobile professionals, who require a consistently excellent communication solution. Optimized for Unified Communications and certified for Skype for Business. (Including carry case and USB dongle) |
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