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500-watt Bass Amplifier with Tube Preamp

The LH500 features a classic 12AX7 Class-A tube front-end design with solid-state output. At 500 watts, the LH500 has more than enough power to drive any cabinet on the market. With a tone stack EQ, the LH500 gives you tremendous control over shaping the sound of your bass.

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  • Sculpt Your Tone

    The LH500 features a classic 12AX7 Class A tube front-end design with a solid-state output. Trick out the bass and treble shelves to give its warm tone an edge, or use the Brite and Limiter switches to further sculpt your sound. Its intuitive front-panel design also makes on-the-fly adjustments a breeze. While the LH500 is the perfect complement to our HyDrive Series bass cabinets, it also works seamlessly with any bass speaker on the market.

  • Total Control

    Naturally, a head with this kind of power is perfect for touring musicians in a variety of live applications, so we made sure the LH500 is as durable as it is versatile and powerful. With a 2-bay metal frame chassis, steel faceplate and handles, this amp is made for the road. The raw, reliable power of the LH500 is also perfect for additional shaping through your effects processor or stompbox. With all the necessary features for complete tonal control, along with ample power and rugged construction, the LH500 will ensure that your bass playing gets the positive attention it deserves.

Features / Specs


  • 500 watts of power @ 4 ohms
  • Classic 12AX7 High Voltage Class-A tube preamp circuit
  • Bass and Treble Shelving, plus mid-peak EQ controls
  • Selectable Brite switch for added high frequency response
  • Selectable limiter switch with LED indicator
  • Front panel XLR balanced direct output
  • Rear panel 1/4" effects loop
  • 1/4" output connectors
  • 2-rackspace metal chassis with steel faceplate and handles


Passive Input Sensitivity 100k Ohms, 20 mV
Active Input Sensitivity 100k Ohms, 60 mV
Rated Output Power 500 watts @ 4 ohms, 350 watts @ 8 ohms
Total Harmonic Distortion less than .5%
Signal To Noise Ratio approx. 78 dB
Equalizer Type Tone stack
Send Output Level 0 dBm
Return Input Level 0 dBm
Dimensions 19" x 14.5" x 3.25" / 483mm x 369mm x 83mm
Weight 23.10 lb. / 10.50 kg

Warning CALIFORNIA PROPOSITION 65 WARNING: Cancer and Reproductive Harm -

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