Leben CS-300F Pre-Main Amplifier

Small and powerful tube JAN-6197 (Made by “GE”/USA)

CS-300F is equipped with GE JAN-6197 which was developed for use in Computers 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.

Other Features

1. Lavish employment of highest grade audio components.
2. WBT type Binding Posts.
3. 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.
4. 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.
5. Almost same as CS-300X(S)

Technical Specifications

• 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 (Headphones): 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

The main difference between CS-300F and CS-300XS is the sound characteristics due to different output valves. The sound of CS300F is more modern and clear whereas and the sound of the CS-300XS is more valve-like (tube-like) / warmer, therefore a choice can be determined based on your own sound preference.