Leeds-based French PR will work on an ongoing retainer basis and will oversee the comms strategy for the firm's Leeds, York and Harrogate stores.
The agency will attempt to get coverage for the in-store events, including selling the Leeds showroom as a good venue.
Last week, it emerged that the Bang & Olufsen would cut 300 jobs as part of a broader cost-cutting exercise. The firm is shifting its focus to concentrate on a smaller range of products.
French PR won the business through word of mouth. Founder Louise French will head the account, reporting into marketing and B2B director Graham Broomfield.
French PR specialises in commercial and residential property, retail and business clients in the Yorkshire region.