Hey All, I've got a Hammond organ chassis to Matchless Spitfire amp that has an extra tube socket I'm itching to fill. I'd like to experiment with two parallel channels and need a place to mix them. Some online searching led me to the method of using the LTP but that gives me a few followup questions on the implementation. So, How exactly do I attach the second channel to the LTP How do I make sure the two channels aren't phased in a way that it cancels each other out. Using this schematic, and looking at this post on Aikenamps, I think I attach the second channel at the place indicated in the attached file (red lines) with the circled capacitor acting as the coupling capacitor. Meaning I can go straight from the channel volume pot to that spot indicated. However, I'm confused why it wouldn't just short the entire channel to ground, so I feel I must have missed something. As for the problem of phasing, am I correct that I would need two gain stages in order to invert the second channel in such a way that it would be in the "proper" phase for this method of channel blending. So the matchless channel would use the parallel 12AX7, but the second channel would use two triodes in series (and I'd put the tonestack between the first and second triode). Would that work?