It is designed in a double mono configuration, free of ferromagnetic materials and specified with 2 x 460 W at 4 Ohm. The circuits are powered by two encapsulated toroidal transformers per channel. The volume is adjusted using a rotary controller with double ball bearings, magnetic grid encoder and optical scanning, which controls a network of resistors. The Humboldt is a pure high level amplifier with 3 pairs of Cinch and 2 pairs of XLR inputs, which can be freely named and adjusted in level. Audionet uses rhodium terminals from Furutech for the loudspeaker connection. Additional power amplifiers or subwoofers can be connected via preamplifier outputs in Cinch or XLR. The 45 cm wide unit – designed by design-legend Hartmut Esslinger – is available for 42,000 Euros in black or silver from specialist retailers or in the Audionet web shop.