Frequently I get a very very loud static sound in my earphones

OMG the same thing keeps happening to me

Same problem here with two sets. Any answers?

I don't get a loud burst of static. My bursts are repetitive but low in volume.

I've found the following helps:

-- Moving the base station (where we hang our headset overnight) to where there's minimum obstruction between it and the headphones.

-- Turning off Surround Sound. That's done at the lower right of the base station. When SS is on, the base station has a yellow light. When the light is off, that helps. (Me, anyway.)

-- Try a different channel. That's done at the lower left of the base station. Might have to turn off the headphones to let it find the new channel. Or, on the left headphone, push the channel button. (Not 100% sure if this left headphone button tip actually works.)

Hope this helps someone. I love my Sennheisers.

I have the exact same issue. First set worked for years then commenced what you experienced. I threw them out. Just bought a new set rs120 II and 3rd time using, same thing. I'm returning them to store. I have a more expensive Sennheiser set, no issues over past 3 years