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6CG7 / 6FQ7 tubes
This 1970s GE 6FQ7 / 6CG7 tube has gray plates with copper grid posts and a halo getter. The white print on the glass has the GE logo and "6FQ7 6CG7 U.S.A." is engraved in the glass with the dot pattern typical of GE tubes. Tube tests as new.
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The 1970s GE 6FQ7 / 6CG7 tubes in this precisely matched pair have halo getters and gray plates with copper grid posts. The white labels have the GE logo. Both tubes test as new and are matched for both mA and Gm.
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The 1970s GE 6FQ7 / 6CG7 tubes in this precisely matched quad have halo getters and gray plates with copper grid posts. The white labels have the GE logo. All 4 tubes test as new and are matched for both mA and Gm.
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This RCA 6FQ7 / 6CG7 tube has gray plates, a side getter, and a clear top. The red print on the glass has the RCA logo (label may be partial). Tube tests as new.
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The 1970-72 RCA 6FQ7 / 6CG7 tubes in this precisely matched pair have gray plates, side getters, and clear tops. The red print on the glass has the RCA logo (may be partial). Both tubes test as new with balanced sections.
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The 1975 RCA 6FQ7 / 6CG7 tubes in this precisely matched quad have gray plates, side getters, and clear tops. The red print on the glass has the RCA logo (may be partial). Tubes test as new with balanced sections and low noise.
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The 1970s Sylvania 6CG7 / 6FQ7 preamp tubes in this precisely matched quad have halo getters and gray plates. The yellow labels on the glass have the Sylvania logo. All four tubes 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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