I am also owner of Sennheiser SET 50. I am very happy with the product. The sound is good, the infrared transmission works very safe and is less sensitive as an Aldi or Lidl wireless headphones. Certainly the Sennheiser headphones are significantly more expensive and only transmits mono. But Let's face it: watch or listen to TV Mono transmission ranges from completely. Also, the battery lasts a long time. I highly recommend this product!