The Zana Deux T is a rare OTC version of the Zana Deux with the partial silver wound transformer upgrade and upgraded caps. This version features speaker outs on the rear instead of a preamp out and produces 8 WPC. A user compared the ZDT and ZDS and said the quoted below. Tubes included will be the power tubes, Sylvania 5751 GB, GE 5751WA Triple Mica, Brimar 12AX7, Raytheon 12AX7 Windmill Getter, and new production Tesla and Sovtek 12AX7s. $1600 for this amp and the tubes which costed me over $250 to obtain. Power supply and cord included as well.A user was able to compare both the ZDT and ZDS and said, "I've been lucky to compare both the ZDS (Super) and ZDT and to my ears, they offer a similar level of performance with the ZDS being slightly more lusher while the ZDT is faster/tighter bass".Shipping is included. Buyer pays paypal.Pictures http://imgur.com/a/QDD5Z EDIT 6/24: I received some questions regarding the tubes and silver wound transformers/upgrade caps. The transformer and upgrade caps were options offered from the factory by Eddie Current. This amp has not been modded by any user or tech and is as it came when originally purchased. In terms of the tubes, I don't know how many hours are on the power tubes but they're still going strong, and I purchased the 12AX7s last year, rotate tubes often, and listen to the ZD about 2 hrs a day, 3-4 days a week.EDIT: 7/13: Here's a quick summary that I wrote up regarding what exactly the amp is and what it can do."Basically from what I've read it's functionally a normal ZD + speaker outs + better low impedance headphone functionality. I've used it with LCD-2s and HD800s alike and found it to pair very well with both bringing some tightness on the low end and clarity to help out the LCD-2s and adding the slightest hint of warmth to the HD800s to help out with the treble. I'd say it's a very neutral amp in the sense of being just warm enough to take the edge out of things without sounding more liquid like a Stratus while still keeping a lot of tightness/impact. I think that makes it very flexible in terms of pairings."