2 x 10" Bass Combo Packing a pair of Hartke's patented 10" HyDrive speakers with neodymium-magnets and a 500-watt Class D amplifier into a sleek, 35-pound cabinet, the HD500 bass combo delivers exceptional bass tone to any rehearsal, stage, or studio. The HyDrive Design HyDrive speakers feature carefully crafted paper/aluminum hybrid cone drivers. The hybrid construction delivers an exceptional blend of warmth and attack that can't be matched by traditional all-paper woofers. The use of rare-earth neodymium magnets also helps maintain lightweight portability without sacrificing any of the legendary Hartke attack. Power and Portability In addition to the flawless sound of the HyDrive speakers, the HD500 offers tremendous power in a highly portable design. Its lightweight Class D amplifier produces an earth-shattering 500 watts of power capable of filling any rehearsal room, recording studio, or performance venue. And with a total weight of only 35 pounds, the HD500 can be easily transported anywhere more bass is needed with its molded strap handle. Shape Your Tone As a result of Hartke's many years of involvement in the bass community, the HD500 features a selectable Shape control. This feature activates a specialized preset EQ curve designed to enhance your tone by selectively boosting and cutting across the frequency range. The adjacent Shape variable filter and 3-band EQ provide further customization. With the exceptional tone of HyDrive speakers housed in a durable, highly portable enclosure, the Hartke HD500 Bass Combo is able to perform at levels far beyond ordinary bass combos. Features Lightweight Class D combo amplifier that weighs 35lb 500 watts of power Two 10" HyDrive paper/aluminum hybrid cone drivers Neodymium magnets Top-mounted control panel Hartke's Shape EQ knob with variable filter 3-band (Bass, Mid, Treble) EQ XLR direct output 1/8" stereo Aux input 1?4" headphone output 1?4" bass input Effects loop Perforated steel grille Molded strap carry handle Specifications Rated Output Power 500 watts Peak / 250 watts RMS Rated Input Level 77.46mv rms (@1kHz) Total Harmonic Distortion 0.54% (@1dB below rated output, 1kHz typical) Signal To Noise Ratio 1W/49.3dBu (1Wrms @1kHz) Signal Gain Speaker Output 37.1Vrms Signal Gain to Direct Out 4.2Vrms Bass Control 70Hz Midrange Control 700Hz Treble Control 5kHz Shape Control 100Hz - 900Hz Dimensions 19.6? x 12? x 20.27? / 498mm x 305mm x 515mm Weight 34.39lb / 15.6kg