The Sennheiser CX Plus True Wireless ranks #444 out of 467 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Sennheiser
Prices on this page were last checked October 11, 2026 at 4:59 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
As an eBay Partner, we may be compensated if you make a purchase.
#444 Sennheiser CX Plus True Wireless: $179.95 TWS Amazon $179.95 eBay
Pros: Supports aptX and aptX Adaptive along with AAC and SBC, so it streams well from Qualcomm based Android phones. Active noise cancelling, IPX4 splash resistance and 8 hours per charge (24 with the case) cover everyday use. Bass runs about 3 dB above target from 60 to 200 Hz in hobbyist measurements on squig.link, which appeals to listeners who want a bassy profile.
Cons: An 11.4 dB treble peak near 10.2 kHz makes cymbals and sibilance sharp and fatiguing, while a 6.6 dB shortfall from 3 to 6 kHz hollows out vocals. The response is very uneven at a 3.9 dB standard deviation, and the 1MORE Penta Driver matches its rating for less money.
| Released | Sep 2021 (5 years ago) |
|---|---|
| Active Noise Cancelling | Yes |
| Back | Closed |
| Battery Life | 8 hours (24 with case, Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, aptX, aptX Adaptive |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Connection | True wireless |
| Deviation From Target | 3.86 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 7mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 5Hz - 21kHz (Manufacturer specified) |
| Harman Preference Score | 51 (median of 1 squig.link measurements, calibrated to AutoEQ) |
| IP Rating | IPX4 |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-2.6 dB at 30 Hz) |
| Tonal Tilt | -0.76 (negative is warmer, positive brighter) |
| Weight | 0 lbs (6 g) per earbud |
- Reviews, Comparisons and Sound Samples
Head-to-Head Comparisons
1 comparisonsNo comparisons match that search.