Beautifully compact at just 302 H x 165 W x 305 D mm and in black or walnut finishes, the GEO MARK II features a super-fast 4th generation 2-inch ribbon tweeter dovetailed with a 5.7-inch mid/woofer, which is coupled to a proprietary Alta XTL Extended Transmission Line. The XTL is tuned at multiple frequencies - not just one - to deliver clear, fast, and powerful bass. Typical retails are £2,500.00 pair for black; £3,000.00 for Walnut!