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Don’t sell your soul to a creditor to get the gear you need. At AMS, we want to lower the barriers to create. That’s why we offer in-house 0% financing, and you don’t even have to open a new line of credit! Spread out payments on your credit card to simplify financing and avoid hefty late fees or service charges. Cost shouldn’t interfere with your creativity.
The Hartke KB15 Kickback Bass Combo has always been the amp that serious bass players reach for — and now it's back with an upgrade worth talking about. We're talking 500 watts of Class D power, a premium 15" HyDrive speaker, and a tilt-back design that keeps up wherever the gig takes you. Same reliable combo that studio pros and road warriors have trusted for years, just with a little more bite.
The HyDrive Speaker: Where Warmth Meets Attack
Most bass speakers make you choose between punchy attack and warm, woody tone. The KB15 doesn't believe in compromise. Hartke's patented 15" HyDrive paper/aluminum hybrid cone delivers both in the same breath, giving your bass the kind of rich, three-dimensional sound that makes soundchecks run dangerously long.
Paper/Aluminum Hybrid Cone: A blend of traditional paper warmth and aluminum transient snap that all-paper cones simply can't replicate — two tonal worlds, one speaker.
Neodymium Magnet: Rare earth magnets keep the cabinet light and road-ready without shaving a single decibel off the legendary Hartke tone you signed up for.
Dual Rear Ports: Two rear-firing ports open up the low end, letting the cabinet breathe and filling the room with deep, well-defined lows that actually move some air.
Shape Your Tone, Own the Room
Raw power is nothing without a voice to call its own. The KB15's preamp is built for players who want quick, intuitive control without wading through a manual the size of a textbook. Dial in the tone you hear in your head in seconds, then get back to playing.
3-Band EQ (70Hz / 700Hz / 5kHz): A straightforward, musical EQ that covers everything from tightening up the low end to adding a little sparkle up top — no engineering degree required.
Variable Shape Circuit (100Hz–900Hz): Hartke's exclusive Shape knob sweeps through a unique fixed EQ curve, adding harmonics, color, and character that a standard EQ just can't generate on its own.
XLR Direct Output: A balanced direct out means you can send a clean, studio-grade signal straight to the board without fumbling for a DI box mid-set.
Kickback Versatility: One Combo, Two Positions
The KB15 isn't the kind of amp that just sits in the corner looking pretty. Its 2-way cabinet design lets you flip between a standard upright position and a kickback angle — so your tone follows your ears, not the back of your knees.
Tilt-Back Kickback Design: Angled back toward your ears, the KB15 acts like a personal stage monitor, giving you a direct shot of your own tone without cranking the volume and annoying everyone else.
1/4" Headphone Output: Plug in a pair of headphones for late-night practice sessions that won't get you evicted. Your neighbors will thank you.
Molded Strap Handle & Lighter Weight: Lighter than a bass amp has any right to be, the KB15 travels easy — no dolly, no drama, no throwing your back out before the show starts.
The Bottom Line
The Hartke KB15 redefines what a bass combo amp can and should be. With 500 watts on tap, a HyDrive speaker that refuses to pick just one flavor, and a smart, flexible cabinet design built for real gigs in real venues, this amp is a genuine tool for serious players. It's powerful without being a pain to transport, and tonally flexible without being confusing — which, honestly, is rarer than it should be.
Hartke KB15 Kickback Bass Combo Features:
500-watt Class D power amplifier (250W RMS)
15" HyDrive paper/aluminum hybrid cone driver
Neodymium magnet for lightweight, high-output performance
2-way tilt-back cabinet design with dual rear ports
Variable Shape EQ knob (100Hz–900Hz frequency range)
Full 3-band EQ at 70Hz, 700Hz, and 5kHz
Balanced XLR direct output for live and studio use
The KB15 puts out 500 watts through a 15" HyDrive speaker, which is more than enough headroom for rehearsals, small-to-medium venues, and most live gigging situations. For very large stages, it also features an XLR direct out to supplement with front-of-house support.
Hartke's HyDrive cone uses a patented paper/aluminum hybrid design that combines the warmth of a paper cone with the tight transient response of aluminum, a combination that standard all-paper speakers can't deliver. The result is a full, balanced bass tone with both depth and clarity.
The KB15 is built for actual gigs. Its 500-watt output, XLR direct output, and rugged cabinet construction make it a capable performer for live settings, while the headphone output makes it equally at home in a bedroom or studio.
The Shape knob activates a unique fixed EQ curve and lets you sweep it across a frequency range of 100Hz to 900Hz. It's designed to quickly add harmonic color and tonal character beyond what a standard EQ can achieve. Think of it as a tone-shaping shortcut.
At 36 pounds, it's one of the lighter 500-watt 15" combo amps available, thanks largely to its Class D amplifier and neodymium speaker magnet. The molded strap handle makes carrying it a one-person job without needing a roadie.
