Ampeg’s Portaflex PF-500 bass head delivers a staggering 500W of power in an ultra-compact design providing pure Ampeg tone in an extremely portable package. Precise tone controls and gig-friendly input/output options provide ultimate flexibility. Pair it with our PF Series flip-top cabinets for the vintage styling and portability of Ampeg’s iconic Portaflex originals.

Technical Specifications

RMS power output
500W @ 4 ohms
Preamp
MOSFET
Power amp
Class D
Tone controls
Bass, mid, treble
Mid-tone control
5-position
Ultra Hi/Lo boosts
Onboard compressor
Balanced direct out
Pre/post EQ option
-40 dB pad
Ground lift
FX loop with dedicated mix control (footswitchable)
Power amp in/ preamp out
1/8” headphone out / line in
-15 dB input pad
Mute (footswitchable)
Power supply
switching
Dimensions (H x W x D inches)
3 x 14 x 11 in
80 x 355 x 272 mm
Handling weight
11 lbs / 5 kg