...information about K1xemp preamp. The sound from this pre can be made even better ....cleaner, clearer, wider sound stage, better bass, silkier highs by using it on Cardas blocks, having a rock on top (here in Arizona, there are dry river beds with smooth stones - I have one about 3 or 4 pounds on the K1, and another on the power supply)....also a bit heavier rock works wonders on the V1xe amp), and never use Cardas manufactured (includes Ayre's own ) cables.