An increasing number of MFB enthusiasts discovered that subjecting vintage MFB gear to a thorough overhaul can lead to surprising results.
A question often heard is if, next to the standard overhaul, there are other means of improvbement possible to increase the sound quality even further. The rationale is that both components and technology have improved over the years, what could be modded to make these speakers even perform better.
The Piratelogic Revision/One boards serve exactly this purpose, not intended to build new loudspeakers but especially geared towards optimizing the existing models. Designed with exactly the same dimensions and mounting points as the 22RH532, 22RH544 and 22H567 motherboards they offer a state of the art replacement for the original 30+ year old boards.