Ampeg Portaflex PF-20T All-Tube Ultra-Compact Bass Head (20w) (PF20T)

This all-tube Portaflex head provides a harmonically rich and studio-worthy 20 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. Specifications RMS power output: 20W @ 4 or 8 ohms Preamp: All-tube [2] x 12AX7 Power amp: All-tube [2] x 6V6 Tone controls: Bass, Mid, Treble Input gain control Preamp balanced line out: Pre/Post EQ,  Ground lift Transformer balanced line out:  Ground lift User adjustable bias control Dimensions (H x W x D inches): 7.3 x 13.0 x 10.4 in | 185 x 330 x 264 mm Weight: 15.2 lb / 6.9 kg Watch: Ampeg PF-20T Feature Overview