Hi John and Tom
Interesting option! How does adding the active work? Is there a switch to alternate between active and passive? Much as I love the TAP passive (review to follow), I sometimes feel the urge to add a tube into the chain. With the stock TAP I understand this benefit can easily be done through the HT bypass, allowing the active tube pre to bypass the TAP.
Kudos John for a brilliant idea and for offering TAP owners the wonderful opportunity. But, I still love the shape of the stock TAP more!

It has a more futuristic look that never fails to be a conversation piece!
Best regards
Dennis