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300-watt Lightweight Bass Amplifier

The lightweight TX300 bass amplifier is the answer for bassists who need a compact amp that can handle the demands of any gig. With 300 watts of power packed into an aluminum chassis that weighs just five pounds, and a flexible preamp with Hartke's Shape circuit for dialing in any tone, the TX300 is a portable powerhouse.

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  • Preamptive

    The TX300 preamp features an active 3-band EQ with Hartke's Shape circuitry for tremendous control over tone. The Drive control allows users to add subtle warmth to their tone or crank it up to full fuzz. The onboard compressor can be dialed up to even out note volume, add punch, and protect the speaker cabinet from the harshest finger-popping techniques.

  • TX300 shape control

    In Shape

    The Shape control is a contour filtering system designed to enhance the sound of bass instruments. When enabled, it allows the player to continuously sweep a filter through various frequencies to tailor the effect of the curve to the specific sonic characteristics of their instruments. This curve provides a moderate boost at certain frequencies and a deep cut at others.

  • Light & Versatile

    Featuring an anodized aluminum chassis and weighing only five pounds, the TX300 is both rugged and ultra-portable. This Class D amplifier delivers the sonic characteristics of traditional amplifiers without the weight. A balanced XLR direct output allows direct connection to a mixer, ideal for direct recording or venue setups. And with a headphone output and 1/8" (3.5mm) input for playing along with your tracks, the TX300 is equally at home in the practice room, the studio, or on the road.


Features / Specs


  • 300-watt Class D bass amplifier that weighs 5lb
  • Drive circuit for added distortion effect
  • Variable compressor for increased dynamic control
  • 3-band EQ with Shape control
  • 1/4" Instrument input
  • 1/8" (3.5mm) Aux input
  • 1/8" (3.5mm) Headphone output
  • Balanced XLR direct output
  • Output Mute switch
  • Rugged anodized aluminum chassis


Rated Output Power 300 watts @ 4 ohms, 200 watts @ 8 ohms
Input >1MΩ unbalanced
Compressor Ratio Fixed 1.6:1
Compressor Threshold Off to -30dBu to Input
Mute >80dB (100dB typical) at Direct Output & Speaker Output
Bass Shelf Knob +/-16dB @ 30Hz (+/-12dB @ 70Hz)
Mid Peak Knob +/-16dB @ 700Hz
Treble Shelf Knob +/-16dB @ 6.5kHz (+/-12dB @ 3kHz)
Shape Range 185Hz – 860Hz (-20dB @ Fo)
Preamp Output 100Ω unbalanced
Power Amp In 20kΩ balanced, 0dBu for Rated Output Power
Direct Output 125Ω balanced
Stereo Aux Input 3kΩ unbalanced, -10dBV
Phones 80mW max @ 32Ω
Dimensions 6.25” x 14.25” x 10.75” / 161mm x 365mm x 273mm
Weight 5lb / 2.3kg

Warning CALIFORNIA PROPOSITION 65 WARNING: Cancer and Reproductive Harm -

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