Sennheiser Momentum 4 Wireless Headset Compared To 670

I purchased these after my Sennheiser Momentum 3 died and was looking for a set of buds with great sound quality and most importantly, reliability. I used to have audio dropouts with my Sennheiser's. So far, I haven't had any issues. I do wish they had an auto EQ feature similar to the Sennheiser, but having LDAC is a good tradeoff.

Great build, good fit, comfortable. After trying the Sennheiser Momentum, and PSB M4U, these are better. The sound is pure. crisp.cleancr clean, crisp

The DA35 adapter is being used to adapt a headset mic (microdot) to my Sennheiser EW100 wireless system. The results have been excellent.

For years I had been using the older Sennheiser RS 120 wireless headset which operated in the 926-928 MHz frequency range. The performance was adequate, but the unit suffered from multipath cancellation (signal reduction due to the out of phase combination of multiple reflections). You will notice this when you move your head slightly, and there would be a sudden, and audible, change in signal amplitude or a short burst of background noise. As I had need for an addition system, I decided on the RS 175 as it seemed to have good reviews. I have not been disappointed. The RS 175 operates in the 2.4 GHz band with digital modulation. While 2.4 GHz systems are also subject to multipath propagation deterioration, I noticed none with this system, even with the headset taken outside onto the patio with the transmitter 40+ feet away. As typical with digital modulation systems, there was a threshold effect -- if the headset got out of range, the signal would abruptly disappear, quieting the audio -- in the past, you would simply be greeted with noise. In addition, I very much like the Bass Boost and Surround Sound options which can be quickly selected at the press of a button on the headset. The one negative for the headset is that you need to really take the headset off in order to figure out which button to press. I find this a rather minor inconvenience as I am not changing audio level, bass boost or surround sound options on the fly. In summary, Sennheiser did a superb job with this unit. The audio quality is excellent (I used an analog input -- an optical interface also exists for even better quality) and the annoying multipath effects so common with many wireless headsets are non-existent.

I compared these headphones to the Apple AirPods Max, and the Sennheiser Momenthum 4 wireless headphones. After several days of evaluating the sound and features i selected the Sony's because I felt the sound quality was the best.

This works with the Sennheiser HMD 26 headset and works well

I think sennheiser is the best wireless system

Sennheiser wireless is flawless. It never fails.

I use these for my sony & sennheiser wireless system.

We compared this to the option offered by Sennheiser and it was less than half the price. It does the job perfectly.