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Behringer 333XL INFINIUM Amplifier Head (333XL INFINIUM) with individual gain, volume, and EQ controls feed

hardcore, 120-Watt, 3-channel tube, 3-channel

What's in the box:

  • Bugera 333XL INFINIUM 120-Watt Guitar Amplifier Head
  • Footswitch
  • Limited 10-Year Warranty


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The 333XL INFINIUM from BUGERA is a modern-style tube guitar amp with individual gain, volume, and EQ controls feed. Unit features three fully independent channels for three fully independent gain structures and tone stacks, and class A/B power section for 120 watts of power. Includes overall active Presence control; an analog Noise Gate on the Lead channel; EL34 power tubes for a more compressed midrange (also compatible with a variety of output tubes); and an XL switch on the Crunch and Lead channels that adds bottom-end to tones.


  • Hand-built, 120-Watt, Class A/B, all-tube amplifier driven by 4 x EL34 tubes for huge tone
  • 3-channel preamp design - Clean, Crunch, and Lead - features 4 x 12AX7 tubes for superior versatile tone
  • Heavy-duty footswitch for channel selection, FX Loop, and reverb included
  • Integrated reverb is assignable for each channel
  • XL switches on lead and crunch channels provide more low end control
  • Adjustable noise gate on lead channel for dialing in tones
  • Master section presence control for overall midrange shaping
  • Revolutionary INFINIUM tube life multiplier technology extends life of power tubes up to 20 times
  • INFINIUM provides incredible reliability and consistent tone without the need for expensive matched tube sets
  • Mix and match any combination of compatible tube types and brands to build signature sound
  • Valve life monitoring LEDs display individual defective tubes for easy replacement
  • Channel equalizer sections with dedicated Bass, Mid, and Treble controls for precise tone shaping
  • FX loop with dedicated send and return level control is ready for pedal board
  • Line output with dedicated level control
  • Impedance switch allows use of virtually any speaker cabinet
  • Switchable damping
  • 3-year warranty program through Behringer

Specifications for the Behringer 333XL INFINIUM Amplifier Head

{ "Preamplifier" : { "Tubes" : "4x 12AX7", "Channels" : [ "1x Clean", "1x Crunch", "1x Lead" ], "Inputs" : [ "1x High Gain 1/4" (6.35 mm) TS", "1x Low Gain 1/4" (6.35 mm) TS", "1x Footswitch" ], "Controls" : { "Master Section" : [ "1x Master Volume control knob", "1x Master Presence control knob", "1x Reverb control knob ", "1x Power switch", "1x Standby switch", "1x Reverb button", "1x FX Boost button", "1x Rear Panel Damping switch", "1x Rear Panel 4,8,16 Ω Impedance switch" ], "Clean Channel" : [ "1x Clean Channel button", "1x Volume control knob", "1x Treble control knob", "1x Mid control knob", "1x Bass control knob" ], "Crunch Channel" : [ "1x Crunch Channel button", "1x XL button", "1x Volume control knob", "1x Treble control knob", "1x Mid control knob", "1x Bass control knob", "1x Gain control knob" ], "Lead Channel" : [ "1x Lead Channel button", "1x XL button", "1x Noise Gate control knob", "1x Volume control knob", "1x Treble control knob", "1x Mid control knob", "1x Bass control knob", "1x Gain control knob" ] }, "Line Output" : [ "1x 1/4" (6.35 mm)", "1x Level control knob" ], "Effects Loop" : [ "1x 1/4" (6.35 mm) Send jack", "1x 1/4" (6.35 mm) Return jack", "1x Send Level control knob", "1x Return Level control knob" ] }, "Amplifier" : { "Tubes" : "4x EL34", "Outputs" : "2x 1/4" (6.35 mm) TS" }, "General" : { "Footswitch" : [ "1x Clean Channel button", "1x Crunch Channel button", "1x Lead Channel button", "1x FX Loop button" ], "Dimensions (WxDxH)" : "26.7 x 9.8 x 10.8" (68.0 x 25.0 x 27.5 cm)", "Weight" : "47.3 lb (21.5 kg)" } }