Ampeg PF-500 Portaflex 500-Watt Bass Amp Head


Packing features like a built-in compressor with dedicated controls, ultra hi/lo boost buttons, midrange controls with a five-position frequency selector, and pre and post EQ control, the Ampeg PF-500 Portaflex 500W Bass Amp Head offers a dizzying array of features in one of the most compact heads on the market. A tiny titan, the MOSFET preamp and Class D power section in this model push up to 500 watts of solid state power for possibly the most powerful 11 lbs of bass-centric amplification on the market.

Product Specs

  • PF-500 Portaflex 500-Watt Bass Amp Head
  • Black
  • 2010s

From the Price Guide

Reviews for the Ampeg PF-500 Portaflex 500-Watt Bass Amp Head
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  • Verified Purchase

    I've had ampeg amps for many years and thay always deliver a grate sound. This one is no different. Sounds ritch and smooth through my markbass 2×10 cab. No distortion at all when I play loud. Sounds clear and punchy even at low volumes. One thing I am noticing is that I really do have to play with …

  • it's still early -

    Verified Purchase

    sounds awesome. good bottom. However - I know it's used and I bought it as is, but there seems to be a short on the on/off switch. I have to hold my mouth just right to keep it turned on. I am concerned that it will crap out on me right in the middle of a gig.

  • Brings the Boom

    Verified Purchase

    I've been thrilled with the tone and punch I'm getting out of this rig.

  • Incredible flexibility

    Verified Purchase

    If you're going to go Solid State then this is a hell of an amp. I've got an SVT Classic as well and yeah, you can tell there's no tubes in this thing but for solid state, what incredible control and excellent tone. The compressor though it only has one knob is incredibly useful. Strongly recommend.


    Verified Purchase

    Kendra if your amp was clipping (Fault light) you had the Gain set too high, and the Master volume wasn't high enough, you were overdriving the preamp and it is shutting itself off to avoid damage. Read the instruction manual, and learn how to adjust your Gain & Master volume levels. It isn't a "Common Problem" except with those that don't know how to adjust the levels.