My aunt has a music room in her house. She has several chairs with tall back, around similar size with your chair. When I visited her and sat at the music room, I did not notice any problem with the sound. Some recommendations online mention significant difference due to the height obstructing the sound, but it also depends on where you put your speakers. I couldn't remember where she placed her speakers, it has been long since I last visited her. By logic, though, I assume you will get similar sound quality if the speakers are located at high angle or at top ceiling. Chairs with tall back are very comfortable so I can understand your dilemma.