It's one of the best amps for HD6** headphones (and many other, of course) and seems quite underrated around here (?).
Comes with the following tubes: Brimar CV4024 (Yellow T), Westinghouse 12AZ7 (2 pair, different labeling), Brimar 12AZ7WA/CV4024.
Bought the amp second hand few weeks ago, but since upgraded to the more expensive ECP T4.
When I received the amp, I could hear a rattling noise inside. Turns out the capacitors spacers/guides cames loose (the double sided tape wore off). These are only used to bend the leads of the capacitors when building the amp, and serve no real purpose once that's done. I placed them back where they belong, but didn't replace the tape. If they come loose again during shipping, it is very easy to put them back into place