TC Tubes and Audio Repair

Repair services include tube and solid state gear, turn table set-up, and tube-testing in Twin Cities Metro Area. Authorized Grado and Ortofon dealer.
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5AR4 / GZ34 tubes

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Mullard GZ34 / 5AR4 - 7 notch plates

Price: $159.00

This 1972 Mullard GZ34 / 5AR4 full-wave rectifier tube has plates with 7 notches and a hole in the centering pin (f32 series). The yellow label has the Sylvania logo (partial). The Blackburn, UK factory code is etched in the glass. Tests as new.

Valve Art 5AR4 / GZ34 - brown base

Price: $29.00

This Valve Art 5AR4 / GZ34 full-wave rectifier tube has welded gray plates and a halo getter. The gold print on the glass has the Valve Art logo and says "O&J, China." Tube is tested for tight section match and ships in its original box.

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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