What Haworth Guitars say:
The Ampeg Portaflex PF-50T Bass Amp Head is an awesome Bass Guitar Amplifier Head by Ampeg.
At Haworth Guitars, we love this Ampeg Portaflex PF50T Head's 50 watts of RMS power at 4 or 8 ohms and the incredibly warm-sounding 12AX7 pre-amp tubes with the 12AU7 and 6L6 power amp tubes.
What Ampeg say:
The legendary tone and portability of the all-tube Ampeg Portaflex amplifiers is faithfully reproduced in the PF-50T. 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 ohms
- Preamp: All-tube  x 12AX7
- Power amp: All-tube  x 12AU7,  x 6L6
- 0db and -15db inputs
- Tone controls: Bass, Mid, Treble
- Mid-tone control: 5-position
- Ultra Hi/Lo boosts
- 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 13.9 x 10.4 in
- 185 x 353 x 264 mm
- Weight: 19.4 lb / 8.8 kg