I’ve just picked up four 6cs7 tubes for my Leben CS-600 amplifier. The Leben CS-600, often called the tube roller’s dream, uses four of these in the driver stage. A wide range of output tubes is possible – mine came with 6L6GC (equivalent to 5881 tubes from the Russian brand Sovtek). Images of 6cs7 vacuum tubes tested on a… Continue reading New 6cs7 tubes for Leben CS-600 amplifiers ~ Everything You Should Know