The HA-Series of amplifiers consist of high efficiency Class AB Power amplifier blocks, with a very low noise pre-amplification stage. While the audio amplification is kept "pure" the rest is optimized for efficiency and size minimization. This gives the integrated amplifier, a new and modern feel.

The MPA-Series provides only the output stage which are usually found within the HA, or PCA Series amplifiers. The trade-off is a higher output power and better noise rejection compared to the other series´. 

The PCA-Series amplifiers consist of high output power Class A amplifiers, with the comforts of a very modern interface. With low noise, high CFM fans, the amplifiers physical size is very small compared to the output power.