The Lab Gruppen fP 6400 is a professional, lightweight 2-channel power amplifier renowned for its exceptional efficiency, high power output, and rock-solid reliability in high-end touring sound systems and permanent installations. Originally introduced in the late 1990s and early 2000s, it famously served as the identical OEM foundation for the L-Acoustics LA48A amplifier.

Core Specifications

The fP 6400 utilizes Lab Gruppen’s proprietary Class TD (Track Double) amplifier topology, which combines the pristine sonic quality of a traditional Class AB design with the extreme efficiency of a switch-mode system.

• Power Output:
  • 3,200 Watts per channel @ 2 Ohms
  • 2,300 Watts per channel @ 4 Ohms
  • 1,300 Watts per channel @ 8 Ohms
  • 6,400 Watts in Bridged Mono @ 4 Ohms