United Kingdom. EWA designs for cables and amplifiers, by Colin Wonfor.

All text and images copyright 2019 ABCaudio & Elsdon and Wonfor Audio

  • EWA Oberon


    Class A integrated amplifier with six line inputs, operating deep in class A: First five Watts SECA output, up to thirty five Watts push/pull into eight Ohms.


    All EWA products bought from ABCaudio webshop can be returned within thirty days for a full refund (minus shipping), amounting to an almost risk free trial period.


    • Specification

      Built as standard for UK voltage, can be built to operate elsewhere. Please specify when ordering. 


      Inputs:  All inputs are specified for a line‐level output of 1 volt into a 10kΩ load.

      Standard input for a line levels device. 
      Input senstivity 200mV typical. 
      Frequency 0.5Hz – 200kHz ± 0.1dB. 

      Outputs 1 & 2: The frequency response is specified for 1 volt output, both channels driven. 

      • Minimum load 100Ω 16Hz – 200kHz. 
      • Nominal load 10KΩ 0.5Hz – 200kHz. 
      • High level load 100KΩ 0.5Hz – 200kHz. 


      Twin Headphone Outputs (SECA): 


      • Frequency Response 10Hz – 50kHz into 65Ω load. 
      • Maximum output voltage with no load is 15V Peak. 
      • 1 volt input level gives a peak output of 4V. 


      Power Requirements: 
      Standby Power 60W.