Woo Audio WES Electrostatic Headphone Amplifiier

WES is an uncompromised design, featuring EL34, 6SL7, and 5AR4-5U4GB rectifier.

• Description
• Features
• Specifications

• All-triode drive, fully balanced. Two units design - AMP unit and Power Supply unit with dual power switch. Innovative stackable chassis with exposed tubes. A standard unit now build with 2 STAX headphone outputs. The HE90 output is optional.

• • Point-to-Point Wiring
  • Four EL34 power tubes
  • Four 6SL7 drive tubes
  • Two 5AR4 rectifier tube. Direct substite: 5U4GB
  • Two 12AU7 phase splittor (back of the AMP unit) - unbalanced input to balanced input conversion
  • Two selectable balanced inputs
  • One selectable unbalanced input
  • One 5-pin pro bias output
  • One HE-90 output
  • DACT CT4 stepped attenuator
  • Auricap capacitors for inter-stage and output coupling
  • Mills and Kiwame resistors
  • Telfon tube sockets

• Fully balanced topology
  
  Peak-peak voltage swing: 1300 volts 
  
  Stax PRO bias: 580V
  
  Sennheiser HE90 bias: 500V
  * Dual power switch
  Standard chassis size
  Removable glass panel
  
  External dimension:
  
  PSU: 4.5"(H), 16.5"(W), 12"(D)
  
  AMP: 7.5"(H), 16.5"(W), 12"(D) (with tube guard)
  
  Weight (AMP + PSU): 40 pounds or 18.2 kg
  
  * From a cold start, the dual power switch protects the tubes from a high current surge. Turning on just one of the power switches provides low voltage to the heaters while the unit remains in stand-by mode. Turning on both power switches allows the unit to function properly.