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KR Audio 300B

KR Audio 300B
KR Audio 300BKR Audio 300BKR Audio 300B
This high power, high voltage triode delivers 6-12 Watts of pure class-A power. Visually stunning (WE style sholdered glass shape) and fully compatible with all classic 300B tubes, this KR300B is the first choice when the quality of your sound matters.

  • Maximum Plate Voltage: 550 V
  • Maximum Plate Current: 120 mA
  • Plate Dissipation: 50 Watts
  • Va: 450 V
  • Ia: 100 mA
  • Vg: -90 V Transconductance: 6.2 mA/V
  • Amplification Factor: 3.9
  • Filament Voltage: 5 V (DC/AC)
  • Filament Current: 1.2 A

    See the spec sheets here.

    See how KR Tubes are made in How It's Made.

    Price is for a Matched Pair

    • KR-300BRegular price: $925.00Sale price: $695.00

    For maximum performance and longevity, vacuum tubes should always be stored and transported in a safe and secure fashion. The TubeCube and the TubeCube Pro provide a customizable shock-resistant environment for your tubes and helps prevent them from becoming microphonic or damaged.

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