Prima: Donnas: 2x56

High-quality, matched pairs of vintage 56 mesh plate tubes are increasingly rare and expensive.

In audiophile circles, this specific 2x56 setup (meaning two Type 56 tubes acting as the heart of the preamp or driver stage) is called a Prima Donna for three reasons: Prima Donnas: 2x56

To understand the 2x56 configuration, you have to understand the Type 56 vacuum tube. Introduced in the early 1930s, the 56 was a super-control indirectly heated triode. High-quality, matched pairs of vintage 56 mesh plate