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250-watt Bass Amplifier

The HA2500 bass amplifier features unique circuitry that ensures every nuance of your bass performance is faithfully reproduced, no matter what kind of music you play. The HA2500 delivers 250 watts of power to a 4-ohm speaker system or 180 watts to an 8-ohm speaker system. With that kind of power, the HA2500 is extremely loud and punchy.

This item is not available in all countries


  • Ultimate Performer and Studio Sidekick

    The HA2500 offers a host of other advanced features, including tube emulation/solid-state circuitry, a built-in compressor, 10-band graphic EQ, effects loop send and return jacks, and a direct out with ground lift and pre/post switches.

    High-pass and low-pass control knobs provide further tone-shaping control over your bass sound. In addition, the HA2500's protective relay circuitry protects connected speakers from dangerous overloads and prevents "pops" during power-up and power-down.

    The Hartke HA2500 is an excellent bass amplifier for live performance in small to mid-sized venues. And with its advanced preamp features, the HA2500 is also ideal for studio work. All of this, combined with exceptional reliability, makes the HA2500 a mainstay in today's bass industry.

Features / Specs


  • 250 watts at 4 ohms, 180 watts at 8 ohms
  • Tube-emulation and solid-state preamp circuit
  • 10-band graphic EQ
  • High Pass and Low Pass contour knobs
  • Built-in compressor
  • Active and Passive inputs
  • Protection relay circuitry
  • Effects loop Send and Return jacks
  • Unbalanced 1/4” Speaker Outputs
  • Balanced Direct Out with Ground Lift and Pre/Post switches
  • Rugged, roadworthy construction


Input Sensitivity Passive Input  100 k Ohms, 20 mV 
Active Input  100 k Ohms, 60 mV 
Rated Power 250 watts @ 4 ohms,, 180 watts @ 8 ohms 
Total Harmonic Distortion  less than .5%
Signal To Noise Ratio  approx. 78 dB 
Contour Low Pass  ±18 dB @ 100 Hz
Contour High Pass ±18 dB @ 10 kHz
 Ten-Band Graphic Equalizer ±15 dB, center detented @ 30 Hz, 64 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 3 kHz, 5 kHz, 8 kHz 
Compression Ratio  2:1 to infinity 
Send Output Level 0 dBM 
Return Input Level  0 dBM 

Warning CALIFORNIA PROPOSITION 65 WARNING: Cancer and Reproductive Harm -

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