5751 tubes

This military spec Sylvania 5751 tube is a lower gain equivalent for the 12AX7. It has gray plates with copper grid posts and a halo or disc getter. The green or blue print on the glass reads "Philips ECG JAN 5751." Tube tests as new with low noise.

The military spec Sylvania 5751 tubes in this precisely matched pair have gray plates with copper grid posts and halo or disc getters. The green or blue labels read "PhilipsECG JAN 5751." Tubes test as new with low noise.

This 1964 military spec Tung-Sol 5751 tube is a lower gain 12AX7 equivalent. It has long gray plates and a halo getter. The white print on the glass has the Tung-Sol logo (partial) and reads "JTL-5751WA." Tube tests as new with balanced sections.