Ruby 6L6GCMS Power Tube Matched Quartet
Ruby 6L6GCMS Power Tube Short bottle, black plate. Tight, chimey tone. Sold in a Matched Quartet.
All RUBY™ Tube power tubes come already matched. There is no extra charge for this service. The Ruby tube matching process is very exact and our tubes are matched within +/- 1 mA (mille amp) of each other.