Amplifier Tube. Made by Groove Tubes. (MC.GT12AX7R2)
Most pros choose Groove Tube! The Groove Tube Process dramatically improves sustain, harmonic balance and tube life span. The long plate Russian Version of the 12AX7 preamp tube. It has larger plates and a big bass response, also a spiral filament which supposedly reduces hum and noise, but these measure about average in that area Customers who bought this item also bought:
• Groove Tube EL34LS Amp Tube - Matched Quartet
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