Audio-Technica designed the ATH-TWX7 as an in-ear true wireless model that offers ANC plus support for the LDAC codec. It borrows its drivers from the more expensive ATH-TWX9 and is sold in Ash Black, Rich White and Stone Grey.
Key specs that matter
The dynamic 5.8 mm drivers cover 10 to 40,000 Hz. Bluetooth 5.1 operates in the 2.4 GHz band from 2.402 to 2.480 GHz, and the codec list is LDAC, AAC and SBC, with LDAC carrying files of up to 24-bit and 96 kHz. With noise cancelling switched on, each charge of the earbuds lasts up to about 6.5 hours, rising to roughly 20 hours with the case. Without noise cancelling, those numbers grow to about 7.5 hours and 24 hours. A 15 minute charge gives about 60 minutes of use, a full earbud charge takes about 1.5 hours, and the case needs about 3 hours over USB or about 5 hours on a Qi pad. One earbud weighs about 4.7 g and the case about 47.5 g. The earbuds carry an IPX4 rating against water. Range is about 10 m in line of sight at an RF output of 12 mW EIRP, and the supported profiles are A2DP, AVRCP and HFP. Sampling rates of 44.1, 48 and 96 kHz are handled, with 96 kHz reserved for LDAC.
Engineering and use context
Beyond noise cancelling, the ATH-TWX7 offers hear-through and talk-through functions, the first letting outside sound in and the second bringing voices forward while keeping background noise down. Calls use MEMS microphones with beamforming, and two call modes, Natural and Noise-Reduction, can be chosen. With multipoint, two source devices can be linked at the same time. Touch-sensitive surfaces control playback and can mute the microphone, and the companion smartphone app adds equalizer adjustment. A Private Timer function is also listed, and a 30 cm USB-A to USB-C cable is supplied for the case. Two sets of eartips in four sizes are supplied, in silicone and comfort-oriented versions. Compared with pricier Audio-Technica models, the ATH-TWX7 omits aptX Adaptive and 3D audio functions.
Pairing
Android phones with LDAC support can use the higher resolution mode, while iPhones and other Apple devices connect over AAC. SBC covers older computers and other Bluetooth sources. Multipoint suits users who move between a phone and a laptop through the day without pairing again.
Alternatives
Audio-Technica's ATH-TWX9 is a pricier true wireless model with digital hybrid noise cancelling and Qualcomm aptX Adaptive support.