The PF-20T captures the portable, all-valve character of Ampeg’s classic Portaflex amplifiers in a compact 20-watt bass head. Its all-tube preamp and power amp deliver harmonically rich Ampeg tone suited to both stage and studio use.

A user-adjustable bias control simplifies valve replacement, while preamp-balanced and transformer-balanced direct outputs provide flexible recording and live options. The PF-20T can also operate without a speaker load, allowing for silent recording or use as a dedicated valve DI.

• RMS output: 20W at 4 or 8 ohms
• Preamp: 2 × 12AX7 valves
• Power amp: 2 × 6V6 valves
• Controls: Input Gain, Bass, Mid, Treble
• Outputs: Preamp-balanced line out; transformer-balanced line out
• Other features: User-adjustable bias control; no speaker load required for silent recording or DI use
• Weight: 6.9 kg (15.2 lb)

120V US Model. Requires step-down transformer for Australian use. Includes US IEC and speaker cable.

Video: https://youtu.be/gRWVfS9OLvI

Product Specs

• Item Number: 44129
• Make: Ampeg
• Model: PF-20T
• Condition: Very Good
• Finish: Black
• Categories: amps ⇒ bass-heads
• Made In: United States
• MPN: 44129