A90 Height Loudspeaker. Seamlessly Integrated. Vivid 3-D Sound. If achieving total immersion is the question, the answer is the A90 height speaker module for the BP9020, BP9040, and BP9060 tower loudspeakers. Add a vertical dimension to your home theater and experience every dramatic detail in Dolby Atmos or DTS:X soundtracks. The A90 height speaker module easily nestles within the top of your BP9060, BP9040 or BP9020 speakers to deliver completely enveloping Dolby Atmos and DTS:X multidirectional surround sound.