Sennheiser amplifier volume controls

Updated by on Feb 7, 2024

Speaker volume: The big dial right on top. Move it clockwise to turn listening volume up, vice versa for down, of course!

Mic Volume: Flip base over, the dial that goes from 1-9 is the microphone, pictures below.

UI770 base diagram

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Leitner LH470 Wireless Dongle Headset
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What is Headset Answers?

This is the internal support database for Headsets.com. We manufacture and sell office headsets in North America. With over 25 years' experience in the business, we know headsets.

Please use our support database for free headset support, whether you’re a Customer of ours (or not). If you have problems, suggestions, or unanswered questions, please email us at hello@headsets.com (compliments also welcomed 😀)

Looking for office headsets in the UK? Check out Headsets.co.uk.

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