Groove Tube GT-6L6-SQ-M- Matched Power Tubes
The Groove Tubes tubes and sets are in the 4 to 7 range on Groove Tubes' scale.
100% Slovakian made with high power and very aggressive dynamic tone...punchier sounding but still a sweet tone. New design with more power and heavy duty components. High power type with more highs and lows than other 6L6 types. 4 matched tubes.