Originally Posted by cschang
It takes half the power to drive even the Sierra-1 bookshelf, let alone the Sierra Tower.
Definitely other things to look at...like the bamboo cabinet.
More seriously though, the engineering is not really the same as well. The Tower's woofer and mid-range drivers are proprietary. While both are ID, they really are different business models and engineering executions.
In my system with a Sierra NrT currently in center position, ARC set a level difference of 2.5 db higher compared to the Towers, they are exactly the same distance from the listening position.
Just got done watching/listening to Harry Connick, Jr. "In Concert on Broadway". This is a Blu-ray with a 96 kHz/24bit TrueHD soundtrack. I would seriously suggest anyone comparing another speaker against the Sierra Tower to pay close attention to the dynamics.
As a for instance, track 13 "Light the Way" Harry is going solo in the beginning of the performance, after a while the band kicks in full force. The impact of these Towers belies their rather diminutive dimensions, these babies ROCK HARD and just about knock you out of your seat. I'm not talking "oh so smooth, and warm", I'm talking about what it sounded like at the live performance, with a full size string, rhythm, and horn section belting it out at the same moment. Dynamic dynamite!
The dynamic impact of these Ascends is truly amazing, I haven't heard anything yet that they don't do well, but the dynamic capabilities are what stand out to me, even above their other terrific attributes.