Prima Donnas: 2x56 ✦

If you ever have the chance to sit in front of a 2x56 driven system, prepare for a "time machine" experience.

The 56 is famous for creating a 3D "bubble" of sound.

These tubes are notoriously "microphonic." If you tap the chassis of the amplifier—or even walk too heavily across a hardwood floor—you might hear a "ping" through your speakers. Prima Donnas: 2x56

Owning a piece of gear like this isn't "set it and forget it." To keep your Prima Donnas singing:

Known for a lush, liquid midrange that modern transistors simply cannot replicate. If you ever have the chance to sit

Older tubes drift. Check your voltages every few months to ensure they stay in the "sweet spot."

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. Owning a piece of gear like this isn't "set it and forget it

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