One of the best interconnects I have found for deep, tight, controlled bass is XLO signature. Back in the day they were highly rated by Stereophile and TAS, Then it was the "Signature 1.1" The current version is 3.1. They are unshielded, but most of the time that is not an issue. The Kimber Hero is also good for bass, but not in the same league as the XLO, but it depends on what you want to spend.
Here is an audiogon thread on the 1.1
http://forum.audiogon.com/cgi-bin/fr.pl?rcabl&1027724248
here is a review of the newer version
www.ultraaudio.com/equipment/xlo_electric_signature3.htm
Here is an audiogon thread on the 1.1
http://forum.audiogon.com/cgi-bin/fr.pl?rcabl&1027724248
here is a review of the newer version
www.ultraaudio.com/equipment/xlo_electric_signature3.htm