So I called the company and the guy said the $22 passive version is pretty much just a high pass filter and would technically make an audible difference. He said they have an active product around the same price as the KAB now where you can’t hear the difference when using it.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.