T-shirts and Gifts

Knob - Plastic, Set Screw, Knurled w/ Top Line, 0.542" Diameter
Colors Available:
Small plastic control knobs with set screw and brass insert. These unique knobs have a subtle retro design that works well in many applications. They have a fine vertical knurl and a raised top with an infilled indicator line. Fits ¼” (6.35mm) pot shafts. For a larger version of this knob, see P-K411-X.
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T-Shirt - Black with Dual Triode Tube Pin-out
Dual Triode tube pinout design screen printed in white. Printed on the front of a black t-shirt.
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T-Shirt - Black with 12AX7 Tube Diagram
12AX7 dual triode tube diagram screen printed in white. Printed on the front of a black t-shirt.
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T-Shirt - Black with Amplifier Schematic
White screen printed vintage tube amplifier schematic. Design is printed on the front of black t-shirt.
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T-Shirt - Black with Retro Orange Amps Logo
Classic Orange Logo T-Shirt, Men’s straight fit. Key Features:
  • Official Orange current Orange Logo
  • Text below the logo reads "The Legendary British Guitar Amplifier"
  • High quality 100% cotton
  • Crew Neck
  • Machine Washable
  • Doesn’t stretch easily
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T-Shirt - Black, Tube Amp Doctor, 25 Years
Black t-shirt from Tube Amp Doctor celebrating their 25th anniversary. Printed on a 100% cotton Fruit of the Loom shirt.
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