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The Hartke HD508 Bass Combo is a true paradox of power, delivering a colossal 500 watts of earth-shaking bass tone in a design so lightweight you’ll wonder if it’s hollow. Weighing in at just 49 pounds, this combo packs four of Hartke’s patented 8" HyDrive speakers into a sleek, portable enclosure.
This isn’t just an amp; it's your new secret weapon for rehearsals, studio sessions, and live shows, providing the kind of rich, punchy tone that makes bassists grin from ear to ear.
Redefining the Low End
There’s a reason the HD series is a player favorite, and the HD508 is a perfect example of Hartke’s commitment to innovative design and incredible sound. It’s got the muscle to fill a venue and the portability to make load-in a one-trip affair. This is the amp that works as hard as you do, without breaking your back.
Four 8" HyDrive Speakers: These aren't your grandpa's paper cones. The patented paper/aluminum hybrid design delivers the best of both worlds: the warmth and roundness of paper with the tight, punchy attack of aluminum. The result is a beautifully balanced tone that cuts through the mix without sounding harsh.
500 Watts of Class D Power: Don’t let its size fool you. This lightweight Class D amplifier pushes out a massive 500 watts, giving you more than enough headroom to be heard and felt in any musical setting. From a quiet jazz trio to a full-blown rock band, you’ll have power to spare.
Shape Your Signature Sound
The HD508 puts an arsenal of tone-shaping tools right at your fingertips. The top-mounted control panel is intuitive and accessible, allowing you to dial in your perfect sound in seconds. Whether you need a fat, vintage thump or a modern, hi-fi slap tone, this amp has you covered.
Hartke Shape EQ: This is the magic knob. With a quick turn, the Shape circuit engages a specialized EQ curve that scoops the mids while boosting the lows and highs. It’s the perfect way to instantly find a sweet spot that makes your bass sit perfectly in the mix.
3-Band EQ: For more detailed sculpting, the classic Bass, Mid, and Treble controls give you the flexibility to fine-tune your tone. Boost the lows for extra rumble, cut the mids for a classic scooped sound, or add some treble for more string definition and attack.
Built for the Road, Ready for the Studio
Hartke knows that a great amp needs to be versatile, and the HD508 is designed to handle whatever you throw at it. Its connectivity options make it an ideal hub for practice, performance, and recording, while its roadworthy construction ensures it will survive the journey.
Pro Connectivity: The XLR direct output lets you connect directly to a mixing board or PA system, making it perfect for live shows and studio recording. You also get an effects loop for integrating your favorite pedals, a headphone output for silent practice, and an aux input for jamming along with your favorite tracks.
Ready to Roll: Getting to the gig is half the battle. The HD508 makes it easy with a molded top strap handle, two steel side handles, and four removable casters. Move it, roll it, or carry it — this amp is built for life on the move.
Your Tone, Your Way
The Hartke HD508 is a powerful, portable, and versatile tool designed for the modern bassist. It gives you the legendary Hartke tone, the power to command any stage, and the flexibility to sound great in any situation.
Hartke HD508 Features:
Lightweight 500-watt Class D bass combo weighing only 49 lbs
Four 8" HyDrive hybrid paper/aluminum cone drivers for balanced tone
Top-mounted control panel with 3-band EQ (Bass, Mid, Treble)
Hartke's Shape EQ knob with variable filter for instant tone sculpting
XLR direct output for connecting to a PA or recording console
1/4" bass input, 1/8" stereo Aux input, and 1/4" headphone output
Effects loop for integrating external pedals
Molded strap handle, side carry handles, and removable casters for easy transport
Rugged, tour-ready construction with a perforated steel grille
Dimensions: 21.75" x 20" x 12" / 551 x 508 x 305 mm
Weight: 49 lbs / 22.2 kg
Customer Reviews
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Ismael O. 🇺🇸
Verified Buyer
Sounds pretty good
Sounds pretty good
Published date
11/20/25
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Richard T. 🇺🇸
Verified Buyer
Amazing Hartke Sound
I’ve been through my fair share of bass rigs, from classic 1×15s to towering 4×10 stacks, but the Hartke HD508 really surprised me. On paper, four 8” speakers didn’t sound like they’d keep up with the punch and depth I’m used to. In practice? This combo kills it.
The first thing that hit me was the...
I could not be any more happier with this amp. It sounds amazing! It's high quality and is tge perfect size and weight for hauling to gigs. I've always loved Heartkes products
Published date
02/26/25
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Joshua W. 🇺🇸
Verified Buyer
Awesome
Wow! This is The Rig ! I used it on a show and Blew everyone away couldn’t believe it !! A very Good Buy!! II
Published date
11/29/23
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Jeffery J. 🇺🇸
Verified Buyer
The most important thing to know about this instrument is its sound.
Hello Ladies and Gentleman my name is Jeffery Jackson. I purchased this bass amplifier, and it has been everything that I could have asked for. I love the mixture of the Lows, mids, and the highs together in such a small cabinet. I guess it’s true, when they say less is more.
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