Listing Price is by piece. Select the model and quantity from list. StudioMonitor 45 High Performance Shelf/Stand Monitor Loudspeaker BDSS™ mid/bass driver with Linear Response Waveguide™ for micro-detail and 3D imaging Second-generation pure aluminum dome tweeter for clearer high frequenciesHigh-gloss anti-diffraction baffle and shaped enclosures for open, spacious imagingCrossover network with oversized inductors and Mylar capacitors for amazing sound quality StudioMonitor 55 Second generation patented 6-1/2" BDSS mid/bass driver with Linear Response Waveguide technology for flat, accurate response with micro-detail retrieval and three-dimensional imaging Cast aluminum driver baskets Second generation pure aluminum dome tweeter for smooth, extended highs Top-mounted racetrack bass radiator for outstanding bass response Non-resonant braced enclosure ensures pure, uncolored performance High-gloss anti-diffraction baffle and shaped enclosures reduce diffraction for open and spacious imaging Crossover network features oversize inductors and premium Mylar capacitors for audiophile-grade sound quality Integrated Zobel network makes the SM55 easy for amplifiers to drive Bi-amp/bi-wire all-metal 5-way binding posts