Straight-ahead power and tone so you can rock like a world class act—even before the royalty checks roll in. The 1000-watt B-4R is the most powerful head in its class. Introduced by Ampeg in 1999, this powerhouse head gives you everything you need for today's music. Not only is the B-4R powerful, it's loaded with tone-shaping features like nothing you've ever experienced.

The 9-Band Graphic EQ can either be used to custom tailor your sound to the room, or it can be used to set up a “second channel" for your show-stopping bass solo. In addition to B-4R's five-position Style switch, the Ultra Mid control provides tonal fine-tuning that should satisfy even the most finicky player. And if you want to really push the envelope, just engage the Texture switch to activate our patented tube emulation circuitry. The ultimate biamped bass head—the Ampeg B-4R.

• Texture Tube Emulation
• Biampable, with Built-in Crossover
• Defeatable Limiter
• 1/4" and Neutrik Speakon® Outputs

Specifications

• RMS Power Output (2 ohms): 500-Watts x 2
  
• RMS Power Output (4 ohms): 340-Watts x 2/1000-Watts (mono)
  
• RMS Power Output (8 ohms): 205-Watts x 2/700-Watts (mono)
  
• Preamp: Solid State
  
• Power Amp: MOSFET
  
• Tone Controls: 3-Band
  
• Mid Tone Control: Style/Ultra Mid
  
• Graphic EQ: Yes, 9-Band
  
• Balanced Line Out: Yes, with Pre/Post, Ground Lift and Level
  
• Effects Loop: Yes
  
• Preamp Out/Power Amp In: Yes, x Two
  
• Dimensions (W x H x D inches): 19 x 5.6 x 15
  
• Weight: 43 Pounds

The new Ampeg B2-RE replaces our ever-popular B-2R, delivering up to 450-watts @ 4 Ohms—and the high-current Neutrik Speakon® jack means that every single drop of that power will make it to your speakers. Since volume and tone should go hand-in-hand, we equipped the B2-RE with our superb tone-sculpting Ultra Mid control, which provides a new level of tonal fine-tuning that should satisfy even the most demanding player.

Want even more control? Use the 9-Band Graphic EQ to custom tailor your sound to the room, or use it as a “second channel" to boost your level for that show-stopping bass solo. Four hundred and fifty watts of pure bass energy, total tone control and rugged construction make the B2-RE a true performer's bass amp.

• Input Pad Switch
• Peak LED Input Indicator
• Defeatable Limiter
• Variable Speed Fan
• 1/4" and Neutrik Speakon® Outputs

Specifications

• RMS Power Output (4 ohms): 450-Watts
  
• RMS Power Output (8 ohms): 250-Watts
  
• Preamp: Solid State
  
• Power Amp: MOSFET
  
• Tone Controls: 3-Band
  
• Mid Tone Control: Ultra Mid
  
• Graphic EQ: Yes, 9-Band
  
• Balanced Line Out: Yes, with Pre/Post and Pad
  
• Effects Loop: Yes
  
• Preamp Out/Power Amp In: Yes
  
• Dimensions (W x H x D inches): 19 x 3.5 x15
  
• Weight: 26 Pounds

The Ampeg B1-RE is our most value-oriented bass head, offering 300-watts of output power @ 4 Ohms, three bands of EQ, Preamp Out/Power Amp In, and an XLR Balanced Line out. It is virtually identical to its big brother, the B2-RE, minus the Graphic EQ.

Ideal for bass players ready to make the jump to a rackmount system, the B1-RE offers more professional features than anything in its class. All that tone, plus solid-state reliability—the highly affordable Ampeg B1-RE.

• Input Pad Switch
• Peak LED Input Indicator
• Defeatable Limiter
• Variable Speed Fan
• 1/4" and Neutrik Speakon® Outputs

Specifications

• RMS Power Output (4 ohms): 300-Watts
  
• RMS Power Output (8 ohms): 175-Watts
  
• Preamp: Solid State
  
• Power Amp: MOSFET
  
• Tone Controls: 3-Band
  
• Mid Tone Control: Ultra Mid
  
• Balanced Line Out: Yes, with Pre/Post and Pad
  
• Effects Loop: Yes
  
• Preamp Out/Power Amp In: Yes
  
• Dimensions (W x H x D inches): 19 x 3.5 x15
  
• Weight: 22 Pounds