Hello, thank you for your review. We are sorry that you are not satisfied with the sound quality of the headphones. Most customers are satisfied with the sound of the headphones, among other things. For enhanced bass, try replacing the included earcups. It really works great, it's proven. If you need anything, write to
[email protected], they will be happy to help you with everything. Thank you and have a nice day, Ondřej - Alza expert