TiVO EDGE Antenna (OTA) 4 tuner 2TB HDD $349.99 Annual service $69.95 ($6.95/mo) or All-In service $249.99 TiVO EDGE Cable 6 tuner 2TB HDD $399.99 Annual service $149.95 ($14.95/mo) or All-In service $549.99 EDGE uses a Broadcom BCM7278 with 4 cores running @1.8Ghz EDGE uses a blower over the old fans in previous models. The inlet is below the unit, and the exhaust vents are on the lower right side below the ledge. Air flow is dramatically improved vs. BOLT. Should be much quieter.@TiVo_Ted EDGE has more RAM (4GB vs 3GB on BOLT), USB 3.0, Dolby Vision. Also, we will be able to support Dolby AC4 audio natively, where on BOLT we would have to do this decode on the CPU. @TiVo_Ted It’s made for cable subscribers and cord cutters alike. Both the cable and the antenna model boast easy one-screen navigation between apps and all major streaming services, live and online TV, and recordings. They both have superior Dolby audio and visual quality, along with all the fan favorites like Auto Skip/SkipMode, OnePass, and universal search. For cable TV enthusiasts, TiVo EDGE for cable provides a service unlike others and allows for a seamless cable experience on top of all of that. It includes a 2 TB hard drive (up to 300 HD hours) along with 6 tuners.Introducing TiVo EDGE - TiVo Blog For cord cutters, TiVo EDGE helps you find and record hundreds of free over-the-air HD shows that you can get with an antenna. Then you can skip eligible ads or set your TiVo EDGE to skip commercials automatically. It has a 2 TB hard drive (up to 300 HD hours) and 4 tuners. Think of all the money you’ll save having access to ad-skippable content from all of the major networks, every month. Make sure to pick up a good HD antenna (we recommend something like this).