 
Back to topic!!....Guy, the second stage I built also used a 6AM4 as the gain element. I really like the sound of that tube, it will serve you well. What I don't like is the sound of coupling caps. Of the caps I've heard, the Deulund cast caps are in a whole other world when it comes to sound and, unfortunately, price. I've tried to minimize the use of any coupling cap, so that one I pick a final design, the Duelunds can be fitted as a crowning touch.
Having few caps as a goal led me to choose a LTP as a second stage. The "left" tube in the pair has the DC coupled signal from the plate of the first tube (EC8010 is my first tube, similar high gm tube to the 6C45P), the second grid is AC grounded and at the 1st plate's DC potential. In the tail is a 10M45S CCS returned to ground.
I also used high current LED bias, but a conventional plate resistor (Mills) in the first stage. So the two pairs of "signal path" caps are the grid grounding caps on the "right" grid of the LTP and the output of the LTP (taken at the "right" plate; advantage is elimination of Miller Effect rolloff in this high gain stage), which is a V-Cap (0.01uF) input to the 6SN7 follower, which is implemented the same Broskie way as is yours.
I think your preamp will sound amazing, don't keep us waiting too long to hear it!!
Your preamp actually has a lot in common with my phono stage and Charlie's. Those two are the best I've heard. I have one more in the pipeline, the latest, DC coupled version of Izzy Wizzy. That preamp has only an output transformer and RIAA caps. Whichever sounds best will serve me for a long time to come. If it is the EC8010/6AM4 preamp, then Deulunds it will be.
Since your stage has two sets of coupling caps, you have lots of money to spend!!
Please consider this experience in making your phono stage choices. don't make the mistakes I've made of fitting it to a box right away. Learn from Charlie and build it on an experimental platform. when it is to your satisfaction, then encase it!
Picture of the 6AM4 LTP stage is included. The whole audio section is included, which also shows the servo/6SN7 stage that you are building. Maybe this will give you ides from which to choose how you arrange yours. As you can see, I did it modularly, and never did get around to building the second stage on Teflon, like the other stages. Trust me, Teflon sounds better and it's a PITA to work with. But I went through several second stages before coming to this one (using the same 6AM4 as you, GREAT CHOICE!), and I can tell you, avoid Nuvistors!
Stuart
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