Researches and tests with integrated pre/poweramps [with internal separated pre– and power amps] showed that outside, blank interconnections ruin the sound quite siginificantly. Especially in those cases, when the interconnects are not screened.

Based on the AC7 the AC7–interconnect improves the sound noticeably. The change is very simple and can be done without the need of extra service: the external interconnections will be replaced with the two AC7–interconnects, ready.

First customer feedback was extraordinary positive, in any case the improvement was clearly audible in such a way, that many customers delayed to buy new amps instead.

The cicable AC7–interconnect will be supplied in a nice transport box incl. a 30page instruction manual about major technical facts and handling of cables.

More informations see here