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The legendary tone and portability of the all-tube Ampeg Portaflex amplifiers is faithfully reproduced in the PF-20T. This all-tube Portaflex head provides a harmonically rich and studio-worthy 20 watts of pure Ampeg tone to satisfy the most discerning bass player. Featuring simple user-adjustable bias adjustment for easy tube replacement and pre-amp and transformer balanced direct outs for maximum versatility. Plus, no speaker load is required for silent recording or even use as a dedicated tube DI. Pair it with the PF-112HLF for the ultimate compact all-tube bass rig.

• RMS power output: 20W @ 4 or 8 ohms 
  
• Preamp: All-tube [2] x 12AX7
• Power amp: All-tube [2] x 6V6
  
• Tone controls: Bass, Mid, Treble 
  
• Input gain control
  
• Preamp balanced line out
  
• Pre/Post EQ
• Ground lift
• Transformer balanced line out
  
• Ground lift
• User adjustable bias control
  
• Dimensions (H x W x D inches):
  
• 7.3 x 13.0 x 10.4 in
  
• 185 x 330 x 264 mm
  
• Weight: 15.2 lb / 6.9 kg