CS-300F is equipped with GE JAN-6197 which was developped for use in Computors and we used this tube for audio purpose for the first time in the world.
We purchased this tube many years ago and have been seeking for the best circuit design to bring the best performance of this clean tube.
For Driver circuit, we used a very high quality tube 17EW8(Hi-FI) specially produced for Hi-Fi use by a major Japanese electronic manufacturer.

  • Lavish employment of highest grade audio components
  • WBT type Binding Posts
  • Self-Biasing circuit accepts new tubes without any Bias adjustments, and also can adapt to a consumption of tube power or to unvenness of tubes automatically
  • Natural wood side-panels made from Canadian White-Ash. This wood is very hard and heavy and is often used as a material of Baseball bats and oars for low boats
  • TUBES EQUIPPED: JAN-6197 (GE) X 4 17EW8(Hi-Fi) x 2
  • OUTPUT POWER - Standard: 15W X 2
  • FREQUENCY RESPONSE: 15Hz - 100KHz (-2 dB)
  • DISTORTION: 0.7%(10W)
  • INPUT SENSITIVITY: 600mV
  • INPUT IMPEDANCE: 100K Ohms
  • OUTPUT IMPEDANCE: 4/6/8 Ohms (Selectable)
  • OUTPUT IMPEDANCE(Headphone): 300 Ohms
  • POWER CONSUMPTION: 82W
  • WEIGHT: 10.5 Kgs
  • DIMENSIONS: 360(W) X 270(D) X 140(H) mm
  • ATTACHMENT: Detachable AC Power Cable x 1