For me Mike, it pretty much depends on the application as to where I like the Z-Sleeve/Bybee sequence. I will wholeheartedly agree with Bybee's in IC's, in fact this is the ONLY PLACE that I haven't had good results using Bybee's. I don't get any results btw.

No so with Z-Sleeves tho. Anywho, with my speaker cables, I have Bybee Ultra speaker filters at the speaker terminals and have found that I need the Z-Sleeves at the amp end or as far away as possible from the Bybees. Having them together intensifies the effects of the Z-Sleeves and blooms the clarity to the point of an instant headache. Funny that at my subwoofer, I use a Bybee Slipstream RCA at the Velodyne's terminal with a Z-Sleeve slipped right over the Bybee!

Go figure. Same holds true for video & power applications. It's ashame that the large Bybee's are side by side in my BP2.5 or I'd consider slipping a mini-Z-Sleeve over each! There's obviously a reason why Jack Bybee wraps his Bybee's with ERS and me thinks Z-Sleeves intensify's that reason. Fact is that I wouldn't be w/o either of these 2 fine products in my system,,,, BUT that's just ME, ymmv.

Regards, Robin