The P30 is the best preamplifier ever developed by Hegel. With its patented technology and hand matched components, the P30 is a confident contender in the race towards being the best pre amplifier in the world. Regardless of price. Despite of what many Hi-Fi enthusiasts believe, preamplifiers are actually one of the most difficult audio components to develop. At the same time it is one of the most important components in a well sounding system. The reason is that the signal strength is very low when entering the preamplifier, and is therefore very susceptible high frequency noise and distortion elements. The most critical phase in the preamplifier is the volume regulation, and in the P30 this is a master piece in it self. The physical volume control knob is only used to describe the desired volume output level to the array of Gigahertz MOS-transistors. These direct the music signal through a network of high quality resistors that reduce the signal level.