One of the mods that I haven't been able to yet publish is the passive mod. The main reason for that is that I was waiting for a couple of 47uF Rubycon caps from someone. The 2nd reason is that I have to double check it on my integrated amp since it has been a while since I last tried it. My amp is in storage right now whilst the builders expand my workshop/lab. But hopefully I can show the mod off in July.