SPL PERFORMER S900 Stereo Power Amplifier (Black)A class of its own Conventional solid state power amplifi ers tend to operate in a critical range of the built in components this results in unpleasant harmonical artifacts. Tube power amplifi ers also distort at their limit but their characteristical behaviour soft ens this roughness and harshness. Non the less this is a falsifi ed representation of the sound image. Thanks to VOLTAiR Technology, the Performer s900 can process much higher levels