Nice matched pair of Mullard UK-made ECC33 tubes. This tube is similar to a 6SN7, but not identical. Can be used in most amps that use a 6SN7 but not all, so if you are unsure you should ask the maker of your amp.
See pics. Shipping...
Gorgeous pair of GEC UK-made 6AS7G brown base tubes in their original HUGE tube boxes. Tested and perfect. Ready to add some magic to your headphone amp for the holidays. See pics.
Shipping to USA only, $18 for priority mail.