Woo Audio Inc. Fully balanced Electrostatic headphone amp WES


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Fully balanced Electrostatic headphone amp - WES - Woo Audio Inc.
Elmhurst, NY, USA
Fully balanced Electrostatic headphone amp WES
Price $4990 Color Black Silver * Normal build time is 2 to 4 weeks. * Included tubes: 1 quad of EL34 (power), 1 quad of 6SL7 (driver), 2 5AR4 (rectifiers), 2 12AU7 (phase splittor) * PSU to AMP power supply cord is included. * AC power supply cord, interconnection cable are not included * Shopping cart applies to the U.S. buyers only. International buyers please contact for shipping cost and payment instruction Owner's Manual(PDF) Technical Specifications: Fully balanced topology 1300 volts peak-peak voltage swing Stax PRO bias 580V Sennheiser HE90 bia 500V * Dual power switch Standard chassis size Removalbe glass panel External dimension: PSU: 4.5â€(H), 16.5â€(W), 12â€(D) AMP: 7.5â€(H), 16.5â€(W), 12â€(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. Standard Features: Point-to-Point Wiring Four EL34 power tubes Four 6SL7 [PDF] drive tubes Two 5AR4 [PDF] rectifier tube. Direct substitute: 5U4GB Two 12AU7 [PDF] 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 Parts upgrade 1: V-Cap inter-stage coupling caps $1280 V-Cap Teflon Film Tin Foil reference grade audio capacitors V-Cap TFTF 0.22uF/300V (12 pcs) Parts upgrade 2: V-Cap output coupling capacitors $380 V-Cap Oil Impregnated Metallized Polypropylene reference grade audio capacitors V-Cap OIMP 2uF/600V (4 pcs) Power tubes upgrade: Shugang 50-Years Treasure 6CA7 matched quad. We source the top quality tubes from the manufacturer directly. The tubes would be tested by us in an actual amplifier to meet the highest quality. $480 with 12-month warranty from Woo Audio. The Treasure series is a statement work of Shuguang's 50-years' of expertise in vacuum tube design and production, a highest quality build. Its unique black glass is due High Polymer Compound Carbon (HPCC) coating. Compared to traditional carbon spray technology, HPCC coating will allow greater concentration of electrons, enhance and maintain stability of the electron flow, maximize "secondary electron emission surpression" from the glass enclosure, in turn reduce effects of electron swirl which generates internal noises from the vacuum tube itself. Driver tubes upgrade: Sophia 6SL7 grade A matched quad. $400 Sohpia's latest 6SL7 sounds faithful and looks aesthetically pleasing. It's silky, extended tremble, open mid-range, deep soundstage. Rectifier tubes upgrade: Haltron 5AR4 NOS matched pair, U.K. made. $260 These highy regarded rectifiers offer exceptional depth, full body, warm mid-range, fast attack, and reveal fine details in the music.
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Technical Specifications

  Woo Audio Inc.
Product Category Audio Amplifiers and Preamplifiers
Product Number WES
Product Name Fully balanced Electrostatic headphone amp
Type Audio Amplifier
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