by Ultimate Support Air-Powered Series speaker stands from Ultimate Support are incredibly strong, sturdy, lightweight - AND, actually raise and lower speakers on their own! Soundstyle has added lockable spikes to the base and improved the bolt and socket assembly of the main support for additional rigidity, while also filling the stands … Driven by innovation and years of research and development, the Air-Powered Series feature an internal shock that lifts speakers … The Soundstyle Z2 speaker stands have been favourites of ours for more than a decade, winning Awards at various prices, and they remain a solid (ahem) choice. They're everything you'd expect from an Ultimate Support speaker stand … The offset tripod base design that we patented is still serving as the basis for all our stands; it’s the trick to making our stands … The Original Series speaker stands from Ultimate Support are extraordinarily strong yet lightweight due to its over-sized heavy wall aluminum tubing. The Ultimate speaker stand adds about 26 inches of additional height and has a maximum height of 9' 2". Patented tripod design: The TS-90's offset, tripod base design provides more support than typical "off-the-shelf" speaker stands… Ultimate Support invented tripod speaker stands, back in the early pre-history of modern music. Ultimate Support JS-TS50-2 Tripod Speaker Stand- Pair - Includes a 1-1/2" and 1-3/8" Adaptors to Accommodate Different Types of Speakers- Carrying Bag Included for FREE!