current Klipsch models are two-way designs, utilizing a tractrix horn for the upper midrange and treble. Wood finishes available were Macassar ebony, zebrawood, rosewood, teak, cherry, oak oil, oak lacquer, walnut oil, walnut lacquer, raw birch, birch lacquer, and black lacquer. Many dealerships displayed wood samples to let customers view and custom-order the veneers. The Klipsch factory would then specifically match the woodgrain on the tops and sides so pairs of speakers would be identical to each other. In a letter sent to its dealers around 1990, Klipsch cited concern over the responsible use of exotic woods from the rainforests and as a result retired the ebony, zebrawood, rosewood and teak veneers. Current speakers The Palladium line, introduced in 2007, is a line of premium speakers. These are sold through special qualified dealers only. The three Icon Series lines (X, W, and V) are diverse products designed to satisfy a variety of tastes and budgets. X=Modern Technology, Contemporary Beauty; W=Modern Technology, Classic Beauty; V=Modern Technology, Value Driven Performance. The trademark of all three is the use of the new 90-degree by 90-degree XT Tractrix horn. The Synergy line is sold by major mass-market retailers. The Reference line tends to be carried by audio specialty stores and custom installers. One feature of the Reference line is the use of the trademark Cerametallic woofers. These are a combination of materials that produce a very stiff, highly controlled cone movement. The newer (2015) Reference Premier series continues improvements with their Hybrid Tractrix Horn, Linear Travel Suspension (LTS) Titanium Tweeter, Spun Copper Cerametallic Woofers, and an all new Tractrix Port for the cleanest, most powerful low-frequency response on the market. THX Ultra II series is a line of dedicated theater speakers and subwoofer. The Klipschorn, La Scala II, Cornwall IV, Forte IV, and Heresy IV comprise the Heritage line, which is available through select authorized Klipsch dealers and Klipsch direct, often by special order. Multi-media speakers The company also manufactures products for multimedia purposes; its ProMedia line of computer speakers has been sold since 1999, and it produces iPod-marketed speakers like the iGroove (with an angled form-factor). Klipsch used in theaters Klipsch also features its speaker designs in the Hard Rock Cafe line of restaurants and in several AMC and Regal theaters. Krikorian Theatres have digital sound featuring the Klipsch KMX sound system. Theaters such as Hollywood's BM Theater house are using Klipsch theater