Located at the pinnacle of PrimaLuna's new range of EVO stereo integrated amplifiers, the EVO 400 is an electronics whose unique philosophy in terms of circuit design and component selection is embodied in a series of unique innovations in a product of its kind and price. In the first place, the effective adaptive automatic polarization system of the Adaptive AutoBias valves stands out, an "intelligent scheme" materialized in the use of a vast network of sensors that monitor and make adjustments to the aforementioned valves in real time, in such a way that no only the distortion is drastically reduced, but also the useful life of the same ones is lengthened. The second noteworthy element of the EVO 400 is found in a strategy aimed at making the board and screen voltages well below the maximum acceptable and therefore the thermal dissipation is as low as possible. This causes each of the outlet valves to deliver substantially less power than is theoretically possible, thus reducing the demands in terms of power and overall distortion. To this must be added the possibility of changing the output valves in order to adapt the sound of the amplifier to the tastes of each user, a flexibility that has a lot to do with the care put into the design of such fundamental components in every amplifier. to valves such as power and output transformers. The EVO 400 also allows switching between triode and ultralinear modes of operation, thus allowing the user to evaluate the differences in sound “character” contributed by each. To this must be added the "AC Offset Killer", a circuit that drastically reduces the noise generated by transformers. The EVO 400 is also distinguished by the extreme quality of the other components that they use, such as the ALPS Blue Velvet volume potentiometer or the hermetic relays used in the selection of inputs, to which must be added the union between them with point welds. ready via high quality and thick cables.

Technical characteristics:

• Very high performance stereophonic integrated amplifier.

• 100% tube architecture, with 4 EL34 power tubes per channel.

• Adaptive automatic biasing system of the valves.

• Executed with very high quality components; point-to-point welding.

• Defective valve indicator light.

• Low magnetic dispersion toroidal power transformer.

• Custom-made ultra-wide passband output transformers.

• Selection of the input source by means of hermetic relays.

• 5 line inputs (RCA), 1 input for A / V and one Bypass input.

• Ability to switch in real time between ultralinear and triode modes.

• Compatible with a wide range of power tubes (KT150 included).

• 2x70 W RMS power at 8 ohms in ultralinear mode (EL34 tubes).

• 2x38 W RMS power at 8 ohms in triode mode (EL34 tubes).

• Dimensions: 386'1x205'7x403'9 mm (W x H x D).

• Weight: 30'7 kg.