Ruby Tubes 6550ASTR (Pair) CH Tube Hot Overview
A Gak overview of the 6550ASTR (Pair) CH Tube Preamp:Ruby 6550A-STR. This Ruby tube is a Sino Chinese Shuguang copy of the straight bottle GE 6550, with tough straight bottle and polished metal base. All Ruby Tubes premium power tubes are carefully tested and matched. Matching is done by both plate current and transconductance
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- Made In China
- Matching is done by both plate current and transconductance
- Comes in a Pair
