Overview: The Sennheiser PXC 550 Wireless headphones are ideal for traveling,
offering high-fidelity sound and adaptive noise cancellation. These over-ear
headphones are lightweight with specially-shaped ear pads for hours of
comfortable listening. The headphones come with a USB charging cable, a straight
audio cable with in-line remote/microphone, and 1/4" and airline adapters. The
ear cups swivel to fold flat for easy storage in the soft zippered travel case.
NoiseGard: The PXC 550s feature Sennheiser's proprietary NoiseGard Hybrid adaptive noise cancelling
which shuts out the noisiest environments, creating your own quiet space. Two
microphones on the outside of the ear cups work as a feed-forward active noise
cancellation system to reduce high-frequency noise, while two microphones inside
the ear cups act as a feed-back active noise cancellation system to reduce noise
in the low-frequency band. There are two NoiseGard settings to choose from:
NoiseGard attenuates the ambient noise to the maximum extend, while Adaptive
NoiseGard varies the noise cancellation effect depending upon the intensity
level of the ambient noise. You can also turn off NoiseGard when noise
cancellation is not needed.
Bluetooth: The headphones feature Bluetooth version 4.2 for listening to your
mobile devices wirelessly. They support the following profiles: Headset Profile
(HSP v.1.2), Handsfree Profile (HFP v.1.6), Advanced Audio Distribution Profile
(A2DP v.1.3), and Device ID Profile (DIP v.1.3). You can immediately pair the
headphones with compatible Android devices using NFC (Near-Field Communication)
by simply touching them together. The Bluetooth range is approximately 33 feet
(10 meters). The headphones feature aptX audio coding for high-fidelity wireless
Touch-sensitive Panel: On the outside of the right ear cup is a touch pad
that allows you to control your music and phone calls with taps and swipes. You
can control the volume up or down with vertical swipes. You can pause and play
your music with a single tap, skip to the next or previous track with a forward
or backward swipe, and fast forward or rewind a track with a forward or backward
swipe and hold. Phone controls include accept/reject a call, put a call on hold,
and switch between 2 active calls.
Sound Effect Modes: There are several Effect Modes to choose from to
enhance the quality of the audio depending upon what you're listening to. You
can choose from the following modes:
- Movie: For more exciting entertainment (best for movies)
- Club: For more room impression (best for music)
- Speech: For higher intelligibility (best for audiobooks or
- Director: When using CapTune, the Director Mode lets you create a
custom sound effect using Boost, Spatial, Reverberation, and DLC
Call Enhancement: The Call Enhancement feature utilizes Sennheiser's
VoiceMax technology to make your phone calls clearer and more intelligible. You
can activate and deactivate Call Enhancement on the headphones or through the
TalkThrough: The TalkThrough feature allows you to communicate with
others around you without having to remove the headphones, even while NoiseGard
is on. Tapping twice on the touch pad activates TalkThrough. If you are playing
music via Bluetooth or the USB cable, the music pauses. If you are listening
using the audio cable, the music is muted.
CapTune: The Sennheiser CapTune smartphone app allows you to optimize the
performance of your PXC 550 Wireless headphones. With CapTune, you can
personalize the sound of the headphones with different sound effect modes,
adjust NoiseGard, activate Call Enhancement for clearer calls, and activate
Smart Pause (plays/pauses your music or accept/end calls by taking off or
putting on the headphones). You can also view the remaining battery life of the
headphones on your device. The app is compatible with iOS (9.0 or later) and
Android (4.1 and up) devices.
Voice Prompts: The PXC 550s feature voice prompts that provide audible
confirmation of certain actions, such as pairing, power on/off, and effect
modes, and volume maximum/minimum. When using CapTune, you can change the voice
prompts from English (default) to German, French, Spanish, Chinese (Mandarin),
Japanese, Russian, or Korean.
Fold Control: For convenience, the headphones turn off when you fold
the ear cups out flat for storage. Likewise, when you fold the ear cups in, as
if you're ready to put them on, the power switches on. A click sound and the
voice prompts are heard as you twist the ear cups to indicate the power has been
turned on or off.
Battery: The Bluetooth and NoiseGard features are powered by a
3.7-volt, 700 mAh Lithium-Polymer rechargeable battery. The battery charges in
approximately 3 hours via USB (5V 345mA), using the supplied USB charging cable.
A full charge supplies enough power for 20 hours of listening with Bluetooth and
NoiseGard on. With Bluetooth turned off, the battery will last an estimated 30
hours with NoiseGard on, with or without audio cable. The battery level can be
monitored through a 5-LED meter on the headphone.
USB Cable: In addition to charging the battery, the included USB cable
can be used for listening to audio. When you plug the headphones into your
computer using the USB cable, you can play music through the PXC 550s. The touch
panel controls and Smart Pause feature are active during USB playback.
Audio Cable: The included 56" audio cable lets you listen to your
music in 2 modes: active and passive. When you plug the 2.5mm end of the audio
cable into the headphones, Bluetooth is deactivated. An in-line 1-button
remote/microphone allows you to play/pause your music and make/accept/end calls.
The cable terminates into a slender right-angled 3.5mm plug that is compatible
with most smartphone cases. Two plug adapters are included: a 1/4" adapter for
listening to your home audio components, and an airline adapter for listening to
in-flight entertainment while traveling.
- Frequency Response: 17 Hz - 23 kHz
- Impedance: 490 Ω (active); 46 Ω (passive)
- Sound Pressure Level (SPL): 110 dB (1 kHz, 1 Vrms)
- Total Harmonic Distortion (THD): <0.5 % (1 kHz, 100 dB SPL)
- Dimensions (Ear Cup): Width 2.91", Height 4.144", Depth 1.86"
- Weight: 8.2 ounces