A:AnswerIn my opinion it does not really need a sound bar. It has nice quality sound on its own. However I did shortly after purchase the Samsung sound bar system and I love it so much more! Do not know if the Sennheiser will work with it not familiar with that brand.
A:AnswerHi! So that we can better assist with this, please reach out to Samsung Support at: 1-800-SAMSUNG, 8AM - 12AM EST, 7 days a week, or Chat with us on Samsung.com: https://www.samsung.com/us/support/contact/
~ Samsung Specialist