Alda PQ Premium projector lamps are equipped with high-quality compatible bulbs and housings. Due to the compatible design of the lamp module, our premium series lamps reach a very affordable price level. Each lamp goes through our QM test in Germany, we check the design and power plug as well as the housing of the lamp. Alda PQ series replacement lamps, are divided into quality classes in our range and available as: the highest class Alda PQ professional lamp, the mid-range reference series and the cheapest premium series. All series are available with housing or as a "bulb only" (bulk) version. The premium series represents the cheapest entry into the world of the Alda PQ series projector lamps.