Introduction SVS has been a heavy-hitter in the internet-direct subwoofer market for over a decade, and has now given its statement-piece “Ultra” designation to a pair of tower loudspeakers (as well as their relevant HT siblings). Unlike earlier SVS offering designed by Philip Bamberg, these Ultra speakers were designed in-house by Mark Mason, who formerly designed speakers for PSB, a well-known Canadian brand. I have personally never had the opportunity to sit down and critically listen to PSB or SVS speakers, so I didn’t really know what kind of tonality to expect, although measurements indicated those earlier speakers as neutral.. or at least some version of it (cue painful 50 Shades of Gray reference). Certain nuances in timbral accuracy and presentation can affect the emotional connection to the listening experience, so listening is crucial before I can judge any well-measuring speaker – although you may know that I will quickly discard anything measuring poorly. SVS claims sensitivity of 88db/2.83v/m and according to Mark, they do dip down to the ~4 ohm range, but otherwise sport a nominal impedance of 8 ohm. Based on this information, the SVS Ultra speakers should be a moderate load to an amplifier’s output stages. Low-power tube amps may lack dynamics, but realistically, I think 80 watts at 8 ohms from any decently designed equipment is probably sufficient for most end-users in reasonably sized rooms. More power never hurts, but even quadrupling that would only give 6 db more in theory, and possibly less in practice. I used the Crown XLS2000 for the sake of headroom, but I doubt it worked a sweat often. Here's my review, spread out over the next five posts. Specifications Rated bandwidth: 28 Hz-32 kHz (+/-3 dB). Sensitivity: 88 dB (2.83V @ 1 meter full-space, 300-3kHz). Nominal impedance: 8 ohms. Recommended amplifier power: 20-300 watts. Dimensions: 45" (H) X 13.8" (W) X 16.25" (D). Weight: 75.4 pounds. Real black oak veneer and piano gloss black finish options.