Working Class Tube Collection

The Working Class Collection is our answer for musicians and audiophiles who want real vintage tube sound without spending collector-level money. Each order includes a randomly selected vintage USA or Japanese 12AU7 from trusted makers like RCA, GE, Sylvania, Toshiba, Matsushita, and more depending on inventory. These tubes are fully tested, verified, and guaranteed by Fuzz Audio. Expect warm, smooth, musical vintage tone perfect for hi-fi preamps, headphone amplifiers, vintage receivers, and guitar amps. Orders of 2–4 tubes are professionally matched by brand and test scores whenever possible. Real vintage tubes. Honest prices.