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Ampeg PortaFlex PF-500 500W Bass Guitar Amplifier 

  • 500W at 4 Ohms / 300W at 8 Ohms
  • On-Board Compressor
  • Ampeg Proprietary Ultra Lo/Hi Settings
  • 3-Band EQ with 5-Way Midrange Control
  • 1/4" and Neutrik SpeakON Outputs
  • Dedicated Tuner Output
  • XLR Out with Pre/Post EQ, -40 dB pad

Ampeg PF-500 Overview

Equipped with a three-band EQ and a variable compressor, the PortaFlex PF-500 from Ampeg is a 500W RMS amplifier head designed for bass guitar. Augmenting the EQ's functionality are Ampeg's proprietary Ultra Hi/Lo settings, as well as a five-way midrange selector, giving you different frequency choices for midrange manipulation from 220 Hz all the way up to 3 kHz.

Neutrik speakON and 1/4" jacks provide dual outputs to cabinets, while a XLR line out allows you to port sound directly into a console or PA—providing you with a ground lift, a -40 dB pad, and a pre/post EQ option to boot.

Should you wish to loop in outboard effects via the rear-panel, the PF-500 sports a FX knob for blending exterior processing to taste. Additionally, a 1/8" headphone out allows you to monitor your signal privately, while a 1/8" stereo auxiliary input affords you the ability to play line-level signals through the amplifier.

  • 500W into 4 ohms or 300W into 8 ohms
  • Dual JFET preamp
  • On-board variable compressor
  • Ampeg's proprietary Ultra Lo and Ultra Hi options
  • 3-band EQ with 5-way midrange frequency control
  • FX mix control
  • Dedicated tuner output for uninterrupted signal flow, if preferred
  • Footswitch jack for controlling mute and FX on/off (dual footswitch not included)
  • SpeakON and 1/4" output jacks
  • XLR Line Out featuring pre/post EQ, -40 dB pad, and ground lift