The Jelco had (like the Audio Sensibility) also been cryoed and burned in so it has more to do with the wire and/or connectors that Steve is using. And the Jelco was no slouch; it replaced and bettered a custom tonearm cable that Gene at Takefive Audio built for me using Cardas wire and a Cardas DIN and Vampire XLR's I believe.
The Audio Sensibility is ridiculously good for the price. I just ordered another one for the mono half of my setup.