To the performer, the Hartke Tone Stack circuit may at first seem puzzling; the controls are wildly interactive, and it’s hard to pin down a “flat” setting to use as a starting point for tonal exploration. It may be tempting to think of the Bass and Treble as simple boost/cut knobs and the Midrange Shape and Frequency as a sort of an isolated semi-parametric EQ, but you’ll find that the Hartke Tone Stack goes beyond these expectations, providing a unique range of control that brings out the best fidelity from almost any bass instrument. Setting the Bass, Shape and Treble controls to the 12 o’clock (mid) positions calls up a preset EQ curve that has been optimized to complement the response of the bass. By varying the Shape knob, one can often zero in on the “sweet spot” of the bass cabinet being used. From there, it’s both simple and inspiring to discover new tonal colors by experimenting with of each of the Hartke Tone Stack knobs. Keep in mind that the Hartke Tone Stack controls are interactive, so keep revisiting each knob after you’re finished adjusting just one. While the ancestors of the tone stack circuitry date back to bass amplifiers of the 1950s, it took the engineers at Hartke , and droves of professional players, to perfect the Hartke Tone Stack. All manner of bass performers, playing on a vast array of instruments – fretless and fretted, upright and strapped on, solid and hollow bodies, four strings and more strings – contributed to fine-tuning the Hartke Tone Stack EQ, delivering exceptional tonal presence and response for nearly every player. In the end, the Hartke Tone stack is all about shifting the midrange response and determining where the highs and lows will sit for the best possible sound.
Real SVT tone includes the sound of a real cab. The scaled-down extension cabinet included with the Micro-CL Stack uses two 10" drivers to deliver pure Ampeg tone. Its frequency range (from 57Hz to 5kHz) is perfectly optimized for the Micro-CL Stack head, bringing out the punch and snap you'd only expect from a full-sized bass stack, but at more manageable volumes. This makes the super-portable Micro-CL Stack not only great for practicing, but also for playing smaller gigs. In fact, your sound guy (not to mention your back) will probably thank you the next time you play a bar or small club with this lightweight bass rig.