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EV55ST

Stereo Vacuum Tube Power Amplifier

Engineered to create a level of performance that goes beyond mere technicalities, the EKCO EV55ST Vacuum Tube Power Amplifier

offers superbly realistic sound reproduction combined with stunning quality of craftsmanship. While using the most suitable valves,

this EV55ST is capable of producing a super sonic performance.

With 'tweakable' valve, negative feedback and speaker settings, the EV55ST is versatile in sound configuration and will drive

a wide range of loudspeakers with ease and sonic detail.


Specifications

  • >90dB Signal/Noise Ratio

  • 560mV RMS Input Sensitivity

  • Input Impedance 100K Ω

  • Output Impedance 4 / 8 Ω

  • 230V, ± 5%, 50Hz Power Supply

  • 280W Max. Power Consumption

  • 4 x KT88, 1 x  12AX7, 4 x 12AU7 Valves

  • 236mm x 356mm x 420mm

  • 28kg  Net Weight

  • 2 x RCA Inputs

  • 4 x Speaker Terminal Outputs

  • Ground Connection

  • Speaker A/B Select

  • Ultralinear / Triode Mode

  • Adjustable Negative Feedback

  • 18Hz – 35kHz Frequency Response (±1dB)

  • 2 x 55W Output Power (Ultra-linear Mode)

  • 2 x 28W Output Power (Triode Mode)

  • <1% at 1kHz Total Harmonic Distortio

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