Orange OB1-500 500W Single Channel Solid State Bass Head

500-watt Solid-state Bass Amplifier Head with 3-band EQ, Blend and Gain Controls, Line Out, Balanced DI, and Dual Speaker Outs
Item ID: MB-OB1500
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Orange OB1-500 500W Single Channel Solid State Bass Head

Add a massive sound to your bass rig with the Orange OB1-500 bass amplifier head. Orange took the popular bi-amp system, using both bass and guitar amps for a wide range of tone and cool overdrive tones, and shoehorned it into a single 2U, rackmountable unit. The OB1-500 sports a 3-band Baxandall EQ so you can dial in the perfect low-end tone. Gain and blend controls let you add overdrive to your sound and mix it with your original signal. Create a monstrous wall of bass tone with the Orange OB1-500 bass amplifier head.


  • A single channel bass head that acts like a bi-amped rig
  • Clean side of the amp has a 3-band Baxandall EQ with powerful tone-sculpting ability
  • Gain control only affects the upper harmonics of your sound keeping the bottom end fat and full
  • Dial in everything from subtle warmth to full on overdrive and distortion
  • All-analog signal path with Class A/B power amp that delivers big tone
  • Footswitchable blend and gain controls mix your clean and dirty sound together
  • Controls include volume, bass, middle, treble, gain, blend, and active/passive switch
  • Blend and gain are footswitchable
  • Balanced DI out for feeding your signal to a mixer or PA
  • 19" rack width and 2U tall

Type:Solid State
Number of Channels:1
Total Power:500W
Inputs:1 x 1/4"
Outputs:1 x XLR, 1 x 1/4", 2 x speakON
Footswitch I/O:Yes
Weight:22.26 lbs.
Manufacturer Part Number:OB1-500