Ampeg PF-800 PortaFlex 800 Watt Bass Guitar Head Ampeg Bass Guitar Amp The Power of PortaflexThe PF-800 delivers the superior performance of Ampeg’s Portaflex Series bass heads in an ultra-compact 800-watt design perfect for power-hungry bassists that demand uncompromising tone. Plug into a pair of Portaflex bass enclosures for a vintage-styled rig that is extremely powerful, portable and undeniably Ampeg.Specs: RMS power output: 800 Watts @ 4 OhmsPreamp: MOSFETPower amp: Class DTone controls: Bass, Mid, TrebleMid-tone control: 5-PositionUltra Hi/Lo boostsOnboard compressorBalanced direct outPre/Post EQ option-40 dB padGround liftFX loop with dedicated mix control (footswitchable)Power amp in/Preamp out1/8" headphone out/line in-15 dB input padMute (footswitchable)Power supply: switchingDimensions (H x W x D)3 x 15 x 11 inches80 x 381 x 272 mmHandling weight: 11.8 lbs/5.35 kg