This Audio Alto’s compact series reflects maximum effort and knowledge, as it presents quite a different solution with its built-in electronic tubes as voltage amplifiers. Result of design and construction is its acoustic-inertial and elegant shape.

The AA DMI 3H is designed as dual mono amplifier and with modularly design enables an insertion of different input modules (Phono RIAA MM/MC etc). AA DMI 3H power supply is realized with two 150VA toroid transformer with a electrostatic and magnetic screen that provides with also doubled electronic regulators power to each set of the amplifier individually. Heating of electronic tubes is regulated and is time-controlled for optimum operation and for achieving their life expectancy of over 5.000 hours. Power supply voltage for tubes is time delayed and regulated.