Sonifex CM-HPR1 Headphone Volume Control, Passive, RJ45 Input, Jack Output

This product allows the connection of a stereo balanced line input via a RJ45 with StudioHub+ pinout and creates a headphone output, with level control. It is transformer balanced and can be used with any headphones above 150Ohms impedance. The transformer ratio of 2:1 ensures that any headphone load presented at the output is reflected through to the input at a 1:4 ratio (hence a 150Ohms set of headphones looks like 600Ohms at the input, a suitable load for most good quality line output stages). Volume Level Control The volume level control sets the output level of the stereo headphone socket and runs logarithmically from zero to the maximum output level.