I have seen that there is now a version 2.1 of the OCD. It is supposed to be less compressed and more like a version 1. Just wondering if anyone has any clues about what the changes might be? I know that most schematics for version 1 that I have seen have an extra germanium diode in the clipping section, and I had been tempted to add that into an ADHD to see how it sounded. Is that the likely change or is there something else that is likely to have been changed?