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7591A tubes
The GE 7591A tubes in this precisely matched pair have gray plates, halo getters, and coin bases. The partial white labels have the GE logo. Both tubes test as new and are matched for both current draw (mA) and transconductance (Gm).
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The Toshiba 7591 tubes in this precisely matched pair have gray plates and halo and side getters. The silver print on the bases has the Toshiba logo. Both tubes test as new and are matched for both current draw (mA) and transconductance (Gm).
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TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio enthusiasts. Our website features secure payment options and fast, convenient shipping around the world.
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