Design and features:This Bluetooth wireless noise canceling portable ear-insert model provides very good sound and excellent active noise reduction. Its ear plug-like design and electronic noise canceling feature reduce both outside noise and sound leaking out into your environment. The headphones work with or without the noise canceling feature being turned on. You can use the noise-canceling feature without listening to music. The CX Plus has a volume control plus an integrated microphone and player function controls. Additional features include - either earpiece can be used alone for one ear monitoring of Bluetooth streamed audio and telephone communications. Charging/carrying case has built-in rechargeable battery that the manufacturer claims can be used to recharge the earphone batteries for an additional 16 hrs. of playtime for a total of 24 hrs. Manufacturer claims water resistance (IPX4). The headphone noise cancellation control setting switches between ANC on, ANC off, and ambient sound monitor (Pass-through) modes by touch control on left earbud; these settings can be customized using the Sennheiser Smart Control app. Has touch controls for music player transport, call connect/disconnect, ambient noise/noise cancellation/ on/off, digital voice assistant activation, and Bluetooth volume control. Has power on/off, Bluetooth pairing, battery status, and other voice announcements. Supports Apple Siri and Google Assistant digital voice assistants when it is used with Bluetooth devices that have those capabilities. Has quick charge feature: 10 min of charging will provide 1 hour of playtime. Bluetooth connected Apple mobile devices using iOS Version 5 and above will show the battery level. Sennheiser Smart Control app download for Apple or Android mobile devices can be used to change the sound of the earphones, show battery level, change various settings such as deactivation the auto pause feature, choose between pausing and not pausing audio when the monitor function is activated, choose between voice announcements and alert tones, and update the earphone's firmware. The CX Plus comes with 4 pairs of ear pieces in various sizes, USB A to USB C charging cable, charging cradle/recharger battery/carrying case, Quick Start Guide. This model comes with Portable Bluetooth wireless noise canceling isolating ear-insert earphones that come with 4 pairs of ear pieces in various sizes, USB A to USB C charging cable, charging cradle/recharger battery/carrying case and Quick Start Guide.
Sound quality:We found the CX Plus delivers sound quality that falls in the very good range - it reproduces music and voice very well although it does have some noticeable sonic quirks and excellent active noise reduction. With the noise canceling mode engaged and the Sennheiser Smart Control app equalizer set to off (as received state of the earphone) the bass (as in bass drums, bass guitars, stand-up bass, etc.) has good impact and goes deep, but is a bit prominent and boomy. The midrange (voices, guitars, horns, etc.) is a touch thin, somewhat grainy, a bit hazy and congested, and a touch etched (a bit more sharply outlined then it should be) and sibilant. The treble (cymbals, the upper range of violins, etc.) is extended, but is somewhat prominent and sizzly (sounds that should have a delicate shimmer have a sound reminiscent of bacon frying). The sound also has a good sense of liveliness and is somewhat open--sound-wise it almost seems like you don't have anything plugging up your ears and does a good job of recovering room ambience in the mid-through upper midrange and lower treble. Mixed character - warmish bass with cool midrange and treble. The overall sound can best be summarized as somewhat bassy, grainy, and sizzly and a bit metallic. The tone settings of the app do have a noticeable effect on the sound of these earphones. Noise Canceling: Excellent noise reduction across the entire frequency range with the low frequencies reduced the most. A very, very faint rushing sound is audible when music is not present at that frequency to mask it.
Comfort and Fit:We found that these earphones as typical of in-ear models they produce a sense of pressure in the ear canal opening that might be uncomfortable for some.
Small
Users with small earbowls might find that the earphone body feels a bit bulky in their earbowl and that they stick out too far and feel like they may lever out of place and are mostly held in place by the section of the earphone that is inserted in the ear canal, but that they will generally stay in place during casual use and that they are stable even during fairly vigorous head movement.
Medium/Large
Users with medium and larger sized ear bowls will probably find that this model fits and stays in place with no problems and that they are stable even during vigorous head movement.
Some users might find tapping on the touch controls to actuate some of the functions drives the earphone further into the ear canal and causes ear discomfort.
Incidental contact with the touch controls can cause unintentional volume level changes, playing, pausing, track skipping, or ambient sound monitoring.
