Important: ZVOX soundbase are designed to primarily to work with varying degrees of hearing impairment. They will work fine as Dolby Digital sound-bases but most of the settings and adjustments are designed to assist the hearing impaired. Two ZVOX Soundbases. The top of the line version and the second in line version. These soundbases are primarily designed for use by people with some hearing issues by using advanced hearing aid processing designs speech is selectively amplified and back ground sounds reduced increasing comprehension. There are multiple programs and adjustments for enhancing speech on movies and TV shows and or reducing background noise. These are large soundbases (not soundbars) and are designed to have large flat screen TV’s sitting on top of them. ZVOX Soundbase 670 Retailed for $500 new 3-1/2H x 36-1/8W x 18-1/16D Supports up to 120 lbs or 70 inch TV Built-in 105-watt Class D amplifier Dolby® Digital decoding, Bluetooth five 2"x3" full-range drivers, three 5-1/4" woofers PhaseCue II virtual surround sound, AccuVoice® dialogue emphasis mode, output levelling, digital audio inputs: 2 optical and 1 coaxial, 2 RCA analog inputs, subwoofer out. ZVOX Soundbase 770 Retailed for $750 new 3-1/2H x 42-3/16W x 18-1/16D Supports up to 140 lbs or 80 inch TV Same features as Soundbase 670 but with a larger 125 watt Class D amp for greater output power. Remotes and operating instructions for both Soundbases included. Audio interconnects also included. I am asking &125 for the 770 and $75 for the 670. Both together $150.