The SPL 2Control Analogue Monitor Controller has a unique Crossfeed control that allows you to judge a stereo panorama on headphones, just like with loudspeakers.
The concept of the SPL 2 Control is based on a dual-channel operation that allows for connection of two sources, two stereo speaker sets and two headphones. Each of the three speaker outputs (2 stereo sets, 1 x mono speaker) is driven by its own balancing stage to exclude signal degrading mutual influences. Each headphone output is supplied by a separate amplifier to allow for completely independent operation of two headphones without any interaction from the other output.
A new feature of the 2Control is the Crossfeed control for both headphone outputs, which was derived from the high-end headphone amplifier Phonitor. From their principle, headphones have the disadvantage of producing a 180 degree stereo panorama – the Crossfeed control can be used to adjust a stereo panorama that corresponds to a stereo speaker image.