I'm new here, just joined today and this will be my second post after posting in the introductions thread. I bumped into this particular thread yesterday and have probably read over a hundred pages and I think my brain may be swollen.
I have just gotten some Sennheiser HD600 headphones and a first version Schitt Lyr amp which will be plugged into an Oppo 103 for my critical listening, I will run the headphones through a Denon X1000 for TV and less critical listing where they work well for such. I have not yet tried the 600's with the Lyr but my RCA cables should be here tomorrow and I sure am looking forward to trying this setup out. I will add that I have been without headphones for over thirty years and I think my last ones were Koss, which were very good at the time, and I have no experience with headphone amps or tubes.
My Lyr came with some stock Russian tubes and some upgraded GE 6BZ7's also from Schitt, but after reading what I have in this thread it appears I may find alternative tubes more pleasing, so I would like to ask your recommendations for my specific setup with these headphones from that source.
If someone could summarize the previous two hundred and eighty two pages by listing the top three or five tube sets for my application it would be greatly appreciated and I would will be thankful.
Here are a couple I have been looking at on eBay but don't really know how well they would fit, or if they are a good deal or not.
http://www.ebay.com/itm/AMPEREX-GOLD-PIN-6922-6DJ8-ECC88-PQ-ORANGE-VACUUM-TUBE-1967-CLOSE-MATCH-PAIR-917-/221612756853?pt=Vintage_Electronics_R2&hash=item3399264f75
http://www.ebay.com/itm/AMPEREX-12AU7-ECC82-VACUUM-TUBE-BUGLE-BOY-1963-MATCH-PAIR-CHECK-TEKTRONIX-A38K-/321586872502?pt=Vintage_Electronics_R2&hash=item4ae01240b6