Hartke HD508 Bass Combo Amplifier (500 Watts, 4x8")

Packing four 8-Inch HyDrive speakers and a 500-watt Class D ampl into a sleek, light enclosure, the HD508 provides exceptional bass tone for any situation.

Hartke's popular HD Series continues to grow with the addition of the high-powered, lightweight HD508 Bass Combo. Packing four 8-Inch Hartke patented HyDrive speakers and a 500-watt Class D amplifier into a sleek enclosure weighing only 49 pounds, the HD508 provides exceptional bass tone to any rehearsal, stage or studio.

Hear the Hartke HD508 bass combo amp in action in this video demo:

The HyDrive Design

HyDrive speakers feature carefully crafted paper/aluminum hybrid cone drivers. The hybrid makeup delivers an exceptional blend of warmth and attack that can't be attained by traditional all-paper bass speakers. And specific to the HD508, packing four 8-Inch HyDrive speakers into a single cabinet creates a combined cone area that is larger, as well as able to reproduce a wider audio range, than that of a single 15-Inch speaker.

Power and Portability

Beyond the impeccable tone of the HyDrive speakers, the HD508 offers tremendous power in a highly-portable design. Its lightweight Class D amplifier produces an earth shaking 500 watts of power capable of filling any rehearsal space, recording studio or performance venue. And weighing just 49 pounds in all, the HD508 can be easily transported via its molded strap carry handle, metal side carry handles or removable casters.

Shape Your Tone

The HD508 includes a selectable Shape circuit that allows you to dial in a specialized EQ curve designed to improve tone through selective boosts and cuts across the read more frequency range. Additionally, a 3-band EQ provides further customization options.


- Lightweight 500 watt bass combo (49lbs)
- Four 8-Inch HyDrive paper/aluminum hybrid cone drivers
- 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
- Two metal side carry handles
- Four removable casters included
WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov.
read less

- Amplifier: Class D, top-mounted control panel
- Rated Output Power: 500W Peak
- Rated Input Level: 77.46mv rms (@1kHz)
- Speakers: Four 8-Inch paper/aluminum cone drivers
- Total Harmonic Distortion: 0.54% (@1dB below rated output)
- Signal to Noise Ratio: 1W/49.3dBu (1Wrms @1kHz)
- Equalizer Center Frequency: Bass 70 Hz, Mid 700 Hz, Treble 5 kHz
- Controls: Volume, Shape, Bass, Mid, Treble
- Shape Control: 100 - 900 Hz
- Input: 1/4" instrument, 1/8" stereo Aux
- Outputs: 1/4" headphone, XLR direct out
- Effects Loop: 1/4" Send, 1/4" Return
- Cabinet Design: 5/8" plywood, shelf port
- Grille: Perforated metal
- Handles: Molded strap (steel reinforced), 2x inset handles
- Additional: 4x removable casters, 8x protective corners
- Dimensions: 21.75 x 20 x 12" (551 x 508 x 305 mm)
- Weight: 49 lb (22.2 kg)
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 58.75 lbs
Shipping Dimensions: 26 x 24 x 16 in
Manufacturer Part Number (MPN): HMHD508

For support or warranty questions, please contact the manufacturer:
Phone: 516-870-7200
Web: http://www.samsontech.com/contact/

Reviewers gave this product an overall rating of 5 out of 5 stars. (4 ratings)
Submitted June 16, 2021 by a customer from HOTMAIL.COM

"Punchy, Deep, and Downright Mean Sounding!"

Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
Wow, just wow... where has this amp been all my life!? I bought this as a "practice" amp for my bedroom but wanted to have the ability to use it during jamming and live performance; this amp is surprisingly compact, weighs 49 lbs but it has side handles making it pretty easy to move around. I have a Warwick Thumb 5-string and it sounds SO GOOD through this amp and this amp has no trouble with the low-B string. Having the mid-range contour is a "must-have" for me - I like the "Jaco" sound (it's actually closer to Michael Manring's tone on Thonk) and I can just dial it in. I also have (amongst others) a Martin BC-16e acoustic/electric bass (4 string) and I was blown away - in my experience most amps make an acoustic bass (when plugged in) sound like a regular electric bass... they seem to loose the "acoustic" quality... this amp makes it sound like an acoustic bass with a ton of volume, just a growling, organic, woody sound. And the volume... I can't turn it much past 1 when I am playing along with music in the bedroom, I mean you have 500 watts on tap so yeah, it's got plenty of power. I LOVE THIS AMP!!! Great job Hartke!!
34 of 34 people (100%) people found this review helpful. Did you?
Thanks for your opinion!


  • 12 x
  • 8 x
FREE -Day Shipping!
Get it  for
Get it by if you order within
Shipping to