The amplifier is constructed in a combination that provides the best balance of power and audio quality (output level) initiated by the most linear lamp 6E5, which ranks as a device of a highest class. This provides minimal signal path thus degradation of the expression.  Another important detail is the remarkable damping factor without feedback that provides defined bass. The box is made of solid, laminated walnut tree wood in order to reduce vibrations minimizing affect on the lamps.  The selected wood is at least several years old, naturally dried and carefully chosen by dryness and its pattern, in order to prevent deformities over the years of use.