Feliks Audio is one of the few boutique brands from Poland making serious noise in the Head-Fi scene. They specialize in ...

Tube power Before Dynaco, cofounder David Hafler and his childhood friend Herb Keroes started another company, Acrosound. Notable in its own right, Acrosound is widely credited with inventing the ...

The superconducting materials used in this transformer are all in structure of a so-called conductors in tube (CIT) cable. Firstly, the electrical design of portable transformer is carried out by ...