This all-tube Portaflex head provides a harmonically rich and studio-worthy 50 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:50W @ 4 or 8 ohmsPreamp: All-tube [2] x 12AX7Power amp: All-tube [1] x 12AU7, [2] x 6L60db and -15db inputsTone controls: Bass, Mid, TrebleMid-tone control: 5-positionUltra Hi/Lo boostsInput gain controlPreamp balanced line outPre/Post EQGround liftTransformer balanced line outGround liftUser adjustable bias controlDimensions (H x W x D inches):7.3 x 13.9 x 10.4 in185 x 353 x 264 mmWeight: 19.4 lb / 8.8 kgOwner’s ManualQuick Start Guide
