Audio separates have always been considered as the premier class of components in the audiophile segment. Fittingly all Octave preamplifiers are designed with top level internal components and advanced functionality in order to achieve the highest level of sonic performance. Examples include the high-grade external power supplies balanced connectors and adjustable gain settings. Furthermore the HP 300 SE and HP 700 SE models are equipped with a transformer output and are optionally available with a built-in phono input.