• Updated to 2nd generation in April 2017

  • Compatible with 5-pin 580v (Pro-bias) for STAX, Audeze, HiFiMan, MrSpeakers electrostatic headphones

  • Tubes: EL34 power x 4, 6SL7 driver x 4, 5AR4 rectifier x 2, 12AU7 phase inverter x 2

  • Polytetrafluoroethylene (PTFE) tube sockets

  • ALPS RK27 4-channel balanced smooth potentiometer

  • Two 12AU7 phase splitter (unbalanced input to balanced input conversion)

  • Fully-balanced design, Class-A

  • Transformer-coupled, Point-to-Point wiring

  • Pseudo-dual power supply

  • STAX Pro Bias 5-pin EarSpeakers output x 2

  • maximum output 1300Vrms

    XLR input x 2, RCA input x 1

  • Auricap capacitors for interstage and output coupling

  • Mills and Kiwame resistors

  • Anodized aluminum chassis, available in black or silver

  • Self-biasing with compatible tubes [chart]

  • Global voltage (100v–220v) without converter

  • Dimensions: Amplifier: 7½"(H), 16½"(W), 12"(D) 20 lbs., Power supply unit: 4½"(H), 16½"(W), 12"(D) 20 lbs., DC cord length: 18” (end to end)

  • Designed and assembled in New York, USA

  • Three-year limited warranty [learn more]

The Audiophile-grade premium internal parts upgrade adds the following. * Available exclusively at the time of build.

  • V-Cap Oil Damped Advanced Metalized (ODAM) audio grade capacitors for coupling (12 pcs)

  • V-Cap Oil Damped Advanced Metalized (ODAM) audio grade capacitors for output (4 pcs)

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