NOS PAIR RAYTHEON 5755 Audio VACUUM TUBES Adapted to 12AX7 USA Tested 4.7412-D
W/ 2 Adapters to 12AX7 Included (5755 --> 12AX7). Pair Raytheon CK5755. TESTED as 5755 on SENCORE TC-136. AUDIO VACUUM TUBES. NOS w/ 2 Original Boxes Included. AMPLIFIER TYPE TUBES.