The Portaflex is a line of amplifiers for electric guitars and bass guitars created by Ampeg and originally designed by Jess Oliver. Portaflex referred to the amps’ portable reflex baffle system. The innovative ‘flip-top’ amplifier head design helped dissipate heat and reduce chassis and tube vibration during use, and inverted to store inside the cabinet for portability. The speaker cabinets were carefully tuned with ports and baffling. The introduction of the Portaflex series established a new standard for bass amplification and completely replaced Ampeg’s previous amplifier lineup. The Portaflex line has many different configurations.