Sylvania 12AU7A - matched pair

The 1959 12AU7 tubes in this precisely matched pair were made by Sylvania and labeled for Conn organs. They have long gray plates with copper grid posts and D getters. Both tubes test as new with very low noise and are matched for Gm & mA.

This early 1960s 12AU7A tube was made by Sylvania and labeled for Hammond or Baldwin organs. It has long gray plates with copper grid posts and a halo getter. Tube tests as new with balanced sections and very low noise.

This 12AU7 tube was made in Japan and labeled for Baldwin organs. It has long gray plates and a halo getter. Click "more info" for current availability.