Methods and devices are provided for improved sputtering systems. The valve has a body defining a passage from a first port to a second port. Such outputs may include variations in coloration or other qualities in correspondence with representations of underlying anatomical structures. The first output signal may be used in control of the DC gain of the equalizer circuitry, and the second output signal may be used in control of the AC gain of the equalizer circuitry. The presented invention is also related with mobile phones.