Mica spacers with metal springs eliminate tube rattle and microphonic
Superior tone and performance to most other 6L6 or KT66 types
Platinum pair (2 tubes), computer-matched by manufacturer on proprietary equipment
5881 equivalent
Description
Power Beam tetrode with large plate dimensions and improved grid structure for increased power handling capabilities. Modeled after the vintage RCA 6L6GC "black plate".