I have both the Bybee speaker filters and the IC filters. The IC filters are on the lines from both my digital (CD player) and analog (phono preamp) sources to my linestage at the linestage inputs, and are also on the lines running from my linestage to my amplifier at the amplifier inputs. I initially thought that the speaker filters had the most effect, and in certain systems, I still think the effect of the speaker filters is at least very noticeable (good). However, in my system and in some others, the biggest and best difference is made by inserting IC filters going into your amp, whether they are coming from a preamp or directly from a source. This has proved to be the case not only in my system but in at least 2 other quite different systems I have listened to at great length recently.
A local dealer here claims that inserting Bybees directly into the power feed of a CD player or DVD player will make a very dramatic improvement in the digital sound reproduction and video output as well. I can't yet verify what this dealer is saying, but I can say that he is a very knowledgeable and reputable fellow whose opinion I respect.
A local dealer here claims that inserting Bybees directly into the power feed of a CD player or DVD player will make a very dramatic improvement in the digital sound reproduction and video output as well. I can't yet verify what this dealer is saying, but I can say that he is a very knowledgeable and reputable fellow whose opinion I respect.