Danish Audio ConnecT. High quality audio parts - APPLICATION NOTE. An example of how to build an active, full-featured, 2-channel  preamplifier. The components used are the CT100 phono stage module (optional), the CT101 line stage module, a 2-channel DACT stepped audio attenuator, a CT3 input selector switch and a CT4 audio balance control. Besides, some CT-knob stainless steel knobs and DACT shaft extension kits are used.