The Tone Science Triple Cross module is a design collaboration between electronic musician/composer Ian Boddy and AJH Synth.

It features three independent crossfader and panner channels, and it can be used with both audio and CV signals. Each of the channels can be configured in one of four different ways:

1) One In, One Out Linear VCA

2) Two In, One Out Crossfader

3) One In, Two Out Panner,

4) Two In, Two Out Crossfader & Reversing Panner combined.

Audio rate modulation can also be used on the CV inputs to create ring modulation and cross modulation type sounds. Each channel has a dedicated Fade control, CV input, and CV Level attenuverter. These can be used together to bias incoming CV signals.

The L1 and L2 outputs from channels 1 and 2 are normalized to channel 3’s inputs, which also have their own level controls to balance incoming signals. This allows very interesting, complex fading and panning between four different input sources, to either mono or stereo outputs.

More information can be found here: Triple Cross Xfader and Panner