When was Sennheiser founded?
Who founded Sennheiser?
Where is Sennheiser headquartered?
What was Sennheiser's first product?
What is Sennheiser known for?
How many research and development sites does Sennheiser have?
How many sales subsidiaries and trading partners does Sennheiser have?
Who took over the management of Sennheiser in 1982?
What subsidiary did Sennheiser acquire in 2005?
When did Sennheiser start producing wireless microphones?
When did Sennheiser enter the aviation market?
What products does Sennheiser specialize in?
What did Sennheiser supply to Lufthansa?
Who acquired Sennheiser's consumer audio division in 2021?