Hi MR,We are very sorry to hear about your experience with the TU700D and we truly appreciate your patience as you had to deal with an exchange. Samsung prides itself on high-quality products and a great customer experience. Please know we are here to help you. There are several sound settings you can adjust to suit your personal sound preferences. Change the Sound Mode by going to Settings > Sound > Sound Mode.You can customize the sound with Expert Settings by going to Settings > Sound > Expert Settings.If you continue to have issues, please know Samsung is committed to providing the best possible product experience, quality, and value. We back this Samsung TV with a 3-year limited manufacturer's warranty, including authorized repair for manufacturer defects, if purchased brand-new directly from an authorized seller.If you need more help, Samsung is here for you. Please call us at 1-800-SAMSUNG, 8 AM - 12 AM EST, seven days a week. Our LiveChat agents are also available by clicking on the ‘Support’ link on our website.~ Samsung Advisor

Thank you, TonyLama! We love to hear positive feedback and we’re delighted you’re enjoying your new Samsung TV.