Ruby Remake of 6550ASTR Tube Matched Sextet
New remake of the GE6550, with tough, straight bottle. Sold as a matched Sextet (6). Reliable and tough tube to suit the AMPEG SVT2 and Classic bass amps.
All RUBY™ Tube power tubes come already matched. There is no extra charge for this service.
Ruby’s matching process is very exact and our tubes are matched within +/- 1 mA (mille amp) of each other.