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The ultra precise response of a high-end studio device. In a nutshell, superior tone and touch are what Quantum™ bass amps are all about. Nothing less will do. An unprecedented union of classic and innovative technologies has birthed a newbreed of bass amp. And it brings a hithertounimagined measure of musicality, tonal authority and portability to the working bassist. Technologies The Preamp Technology THE DynavalveTM Power amp Technology Quantum™ amps’ inputs feature the Tube Touch Circuit™. Extraordinarily saturation-resistant, this circuit makes the amp remarkably responsive to the players’ touch. Another wonderfully practical feature is the Tube Growl knob that serves to dial in sweet-and-soulful sounding compression and tube saturation effects. It sweeps smoothly from subtle to strident – and all points in between. A breed of EQ otherwise found exclusively in high-end studio gear, the Pure Parallel EQ™ dramatically reduces undesirable filter effects, turning the four-band voicing section into an awesomely effective sound- sculpting tool. Tweaked specifically for the bass, it affords easy, intuitive handling and transcendent audio results. Seasoned players know the deal: 100 tube- driven watts simply sound louder than 100 solid state-powered watts. The reason for this is that tube power amps’ complex dynamic properties enhance audio signals with transients. These added frequencies enrich the spectrum, making each note more concise, more explosive, and louder. Hence, signal content is decisive in determining the perceived volume, touch and response – the very “feel” of an amp. Though tubes are influential, tube power amp circuits have a far more formative hand in shaping these audio phenomena. With this fact in mind, the engineers who masterminded the Quantum™ series created a 21st century original - the world’s first tubeless power amps with totally tube-driven response. A quantum leap in performance, the patent-applied- for Dynavalve™ technology delivers better tone, greater sound pressure and a mightier punch to satisfy even the most discerning bass player. Transient characteristics of: Solid-state power amps Functionality of conventionalserial EQs Tube power amps Functionality of the parallel EQ dynavalveTM power amps Enhanced HF Neodym Speaker Technology Tuned Resonance™Cabinet Technology All Quantum™ combos and cabinets are loaded exclusively with speakers featuring Neodym magnets. Not only does this technology significantly reduce weight, it also creates a more concentrated magnetic field that considerably enhances response. These speakers feature integrated HF systems designed to render the crucialovertone spectrum with utmost uni- formity. While the 10" speakers use parallel membranes (that is a dual cone design) to this end, the 12" and 15" woofers feature a fresh new technology. A machined aluminum cone (Dura Dome™) renders the voice coil’s high frequency output. Both of these techno- logies deliver true response, a wide pattern of throw, and a rich overtone spectrum that blends perfectly with the low and mid-frequencies produced by the main membrane. Many years experience designing, tuning and manufacturing speaker enclosures enabled the Quantum™ development team to build cabinets that – like fine acoustic instruments - make the most of resonances. Ingeniously engineered panels and bracings, as well as the robust, six-ply Okume wood (with about half theweight of standard cabinet woods), deliver powerful, punchy low-end projection and finely balanced, crisp midrange. Because the resonant enclosure is tuned to radiate uniformly across its entire surface area, the bass signal can be localized precisely from any position on the stage. 15" duraDomeTMNeodymiumSPEAKER HEAD QT 600 The toasty warmth, brawny punch and intuitive handling of a classic all-tube tone machine, wed to the flexibility and precision of a premium studio device: This combination of qualities makes the QT 600 the first choice for bassists who refuse to settle for anything less than the best. The amp’s mighty heart is a powerhouse 600 watts Dynavalve™ amp. Pumping out ample power for persuasive perform- ance in every sonic scenario, it offers plenty of headroom to stress even the most fulminate musical accents. The Tube Growl knob affords total control over typical tube-driven compression and saturation, and an impedance selector matches output power to suit connected cabinets. The two passive and active inputs are extremely responsive across the full sweep of the gain spectrum, providing the perfect platform for launching even the most propulsive grooves. Powered by sophisticated parallel EQ technology, the four-way voicing section spares the rod to “spoil” the signal, gently tweaking frequencies for the most effective and musical sound-sculpting imaginable. Four pushbutton filters shape the basic tonal character: Punch emphasizes the low and high ends without altering level. Bass Shape attenuates the bottom end, say, to suppres...