I am using the interconnect filters on both my turntable and my CD player. They do provide a significant improvement for the positive providing better focus and detail, without emphasizing any particular part of the musical spectrum. I actually found that the Bybee speaker filters made an even bigger improvement in my system (Pathos/Nordost/ProAc) providing the same type of benefits as the IC filters, but to an even greater degree. I would highly recommend both of them.
