Yamamoto Acoustic Craft 4P Tube Socket for 211/845

Compatible Tubes

211, 845, 242, 832 etc.
Mounting holes 55φ screw spacing 48mm×4

There is no locking function. It can be held firmly only by pin disengagement. Please be careful not to insert in the wrong direction.

The original tube socket is made of fluoroplastic machined from fluoroplastic, with a round machined pin fixed in place. This prevents deterioration of sound quality due to vibration because the tube is held firmly without rattling. The fluoroplastic also has excellent insulation properties, making it a key component in the construction of vacuum tube amplifiers.

Explanation of materials used

Fluoroplastic: Official name is ethylene tetrafluoride, which has the highest electrical insulation and dielectric constant of any solid. It also has excellent temperature resistance characteristics.

Phosphor bronze: Used as the material for the pins of most tube sockets (except L series). It has high strength, excellent springiness, and maintains stable contact.

Gold plating: Thick gold plating is applied to most socket pins over a non-magnetic base material. (Except for the L series) Magnetic materials are also eliminated from the plating as much as possible.