The Nordost Sort Kone's function is to the performance of sensitive electronics, by providing a tuned damping system which reduces the noise due to resonant frequencies of circuits and power supplies in those electronics.
Nordost’s resonance control device: The Sort Kone is a directly coupled and mechanically tuned resonance control device, using a sophisticated new approach to the problem of supporting sensitive electronics.
Whereas most equipment supports are referred to as Isolation Devices, this actually completely misunderstands the nature of the problem. The most harmful mechanical energy doesn’t enter the equipment from outside, it’s generated internally by the audio circuits and their power supplies. Transformers, power supply capacitors, even the active devices themselves, all vibrate as they operate – and those vibrations occur right where the fragile signal is, creating timing errors that smear and distort the music. The Sort Kone is designed specifically to deal with this threat to audio fidelity.
There are three different models each constructed with different materials and therefore with different damping properties
|Model ||Material ||Price |
|AS ||aircraft grade aluminum post and base, used in conjunction with a |
high-grade steel ball.
| $110 |
|AC ||the same metal parts as the AS cone, but employing a ceramic |
|BC ||bronze is substituted for the aluminum with a steel ball, giving signiﬁcant gains in dynamic range and tonal colour || $220 |
|TC ||the ultimate Sort Kone, using titanium metal parts with the |
ceramic ball. Brings breathtaking weight and presence to recordings.
| $580 |
Stereophile had a listen and remarked on the effectiveness which you can read about here.