Sonifex CM-HPX1 - Headphone Volume Control - XLR Input - Jack Output

The CM-HPX1 allows the connection of a stereo balanced line input via 2 x female XLRs and creates a headphone output, with level control. It is transformer balanced, and can be used with any headphones above 150Ω 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 150Ω set of headphones looks like 600Ω at the input, a suitable load for most good quality line output stages).

The headphone level will be at half the level of the incoming signal with the volume control at 100%. The volume level control sets the output level of the stereo headphone socket and runs logarithmically from zero to the maximum output level.