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Tube Services
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Detailed photos of tubes and parts
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Vintage US and Euro tubes, including guitar tubes and rare triodes
- Find out when your Telefunken tube was made: Telefunken tube date codes
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Repair services
- Vintage audio repair services in Twin Cities Metro area, specializing in tube audio and turntables. Our shop is available by appointment. Contact us.
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This military spec 1970s GE 5998 is an uprated 6AS7G/6080 dual triode tube type. It has black plates and a halo getter. The GE logo is printed on the base and reads "JAN-5998." Tube tests as new with very low noise.
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This GE 6080 dual triode power tube is a ruggedized 6AS7G tube type. It has black plates, top getters, and a metal collar base. The green print on the glass reads "GE JAN-6080WC." Tube tests as new with low noise.
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This 1963 military spec Raytheon 5687 tube has a halo getter and black plates. The red print on the glass has the Raytheon logo and reads "JRP-5687WA." Tube tests as new with low noise.
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This 1966 Amperex Bugle Boy 12AX7 / ECC83 tube has gray plates and a halo getter (I65 series). It has the famous Bugle Boy label. The Heerlen, Holland factory code is etched in the glass. Tube tests as new with preamp grade noise levels.
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The rare 1950s CBS 5814A tubes in this precisely matched pair have early black plates with copper grid posts and D getters. The blue print on the glass has the CBS logo and matching date codes (613). Both tubes test as new with low noise.
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The 1960s GE 5881 power tubes in this precisely matched pair are 6L6GB type tubes. They have gray plates, side getters, and brown bases. The white print on the glass has the GE logo. Both tubes test as new and are matched both current draw and Gm.
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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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This 1964 Mazda 12AT7 / ECC81 has gray wing style plates and a halo getter (Tk2 series). The white print on the glass has the ADZAM logo and the Suresnes, France factory code is etched in the glass. Tube tests as new with balanced sections and very low no
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This rare early 1945 military spec National Union 6SL7GT / VT-229 tube has a bottom getter and gray glass. The silver print on the base has the National Union logo and reads "JAN-CNU-6SL7GT VT-229." Tubes tests as new with very low noise.
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This 1955 RCA 12AU7 tube has long black plates and a D getter. The white label on the glass has the RCA logo. Tube tests as new with low noise.
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The 1964 RCA 5U4GB rectifier tubes in this precisely matched pair have black plates and O getters. The red print on the base has the RCA logo. Both tubes test as new with balanced diode sections
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The 1955 RCA 6CG7 tubes in this precisely matched pair have horseshoe getters and black plates with black internal shields. The white labels on the glass have the RCA logo and matching date codes (5-26). Both tubes test as new with low noise.
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The 1973 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. Both tubes test as new with balanced sections.
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The 1969 RCA 6V6GTA tubes in this precisely matched pair have gray plates and dual O getters. The red print on the bases has the RCA logo. Both tubes test as new and are matched for both current draw (mA) and Gm.
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The 1959 Siemens EL84 / 6BQ5 tubes in this precisely matched quad have gray plates and large halo getters (rX3 series). They are labeled for Fisher. Tubes test as new and are matched for current draw (43.8 & 45.0 mA) and Gm (90-95%).
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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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