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From Our Research Team:

Lightweight GK Power

The rugged and lightweight Gallien-Krueger 400RB-IV bass head serves up 280 watts into 4 ohms. Shape your tone with the onboard contour and presence controls, tweak your sound to perfection with the 4-band active EQ, and dial in the perfect amount of growl with the Boost knob. Voice the amp for either 4- or 5-string basses with String Bass. With its high current capacity, the 400RB-IV doesn't need current limiting circuits, which rob your sound of natural transients, leaving you with unresponsive mushiness. With the Gallien-Krueger 400RB-IV, you get unadulterated GK power.

Gallien-Krueger 400RB-IV Bass Amp Head at a Glance:

• Tweak voicing for 4- or 5-string bass with the String Bass button
  
• G.I.V.E. Technology gives you punchy GK tubularity
  
• Shape your sound with 4-band active EQ, Contour, Presence, and Boost

Tweak voicing for 4- or 5-string bass with the String Bass button
The 400RB-IV lets you effortlessly switch between instruments at will. A 5-string bass requires entirely different low end amp response than a 4-string instrument. Equalizers cannot accommodate this fundamental voicing difference, but the 400RB-IV's String Bass button does just that.

G.I.V.E. Technology for punchy tubularity
The Gallien-Krueger 400RB-IV bass head employs GK's G.I.V.E. (Gate Induced Valve Effect) technology, which lends just the right amount of tubularity and grit to your bass, while proprietary voicing filters and intuitive four band active EQ let you zero in on your signature sound quickly and easily. The 400RB-IV delivers classic GK tone, in a compact, lightweight package.

Shape your sound with 4-band active EQ, Contour, Presence, and Boost
The Gallien-Krueger 400RB-IV gives you complete control over your sound. Sculpt your tone with the 4-band active EQ, Contour, and Presence controls, then add just the right amount of growl with GK's Boost control. All the tools you need to dial in your perfect bass sound are onboard the Gallien-Krueger 400RB-IV.

Gallien-Krueger 400RB-IV Bass Amp Head Features:

• Tweak voicing for 4- or 5-string bass with the String Bass button
  
• G.I.V.E. Technology gives you punchy GK tubularity
  
• Shape your sound with 4-band active EQ, Contour, Presence, and Boost
  
• Direct Out lets you run directly into a PA or recording console
  
• Extremely high current capacity
  
• Smart protection circuitry
  
• Cool running reliability
  
• Low noise operation

The Gallien-Krueger 400RB-IV is your ideal club head!

Specification Detail Type Solid State Number of Channels 1 Power 280W Effects No Compression No EQ Active 4-band Amp Modeling No Number of Models 0 Number of Tubes 0 Preamp Tubes 0 Power Tubes 0 Inputs 1 x Instrument Outputs 2 x Speaker; 1 x direct Footswitch I/O No Effects Loop Yes Height 3.5" Width 17" Depth 8.25" Weight 15 lbs. Manufacturer Part Number 302-0240-B