Sonifex CM-HPR1 Headphone Volume Control

Information

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 150? 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 150? set of headphones looks like 600? at the input, a suitable load for most good quality line output stages).

Headphone Output

The stereo headphone output uses a stereo 6.35mm jack socket.

The headphone level will be at half the level of the incoming signal with the volume control at 100%.

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.

Analogue Inputs CM-HPR1

The stereo analogue input is on a female RJ45 connector.