With this TUBE-02, FX-Audio offers a low-cost tube headphone amplifier with a neat design for a neat audio reproduction. Based on two 6K4 tubes, it will allow you to enjoy the sound signature of this type of amplification, namely a warm and authentic sound. The amplifier also includes 3 NE5532P AOPs mounted on a DIP8 bracket and therefore interchangeable, in order to be able to adapt the sound reproduction according to your listening. On the connector side, this TUBE-02 has a 3.5mm jack and a stereo RCA input and a 6.35mm output jack. Each connector is gold plated, providing good conductivity and excellent oxidation resistance. All components are integrated in a robust and compact aluminium housing.