Made in USA by RCA.
Highest power output of 6L6s type. Long tube, Muddy black plate, Bottom Double D-Getter.
Sweet midrange, deep bass, wide range and balance.
Nos in original box. All are same date code and tested very matched (less than 1.5 %).
Very hard to find one set of RCA 6L6GC today with same tested value and date code.