> perhaps something that combines Death by Audio's TSA:
>

http://www.killerrockandroll.com/deathbyaudio/totalsonicannihilation.h
tml

What a truly awful web page. Not only do you have to mess around
trying to work out how to actually *see* the text so that you can
read it, but then it doesn't even tell *what* the product is! And
this guy expects people to buy stuff from him He needs to take some
lessons on PR/marketing/presentation. Eventually discovered the
review, where it says it is 'a simple feedback loop circuit into
which you connect the other pedals in your setup'. So, some sort of
filter ( ) into which you can introduce what you want into the
feedback path (which some Doepfer filters currently allow). Phil, can
you shed any more light on what it actually is (Do you have one )

Tim